/* roulang page: index */
:root{
      --blue:#2563a8;
      --blue-dark:#174b83;
      --blue-light:#eaf3fc;
      --orange:#e9a52d;
      --orange-soft:#fff4dc;
      --ink:#172c43;
      --text:#385069;
      --muted:#7d91a5;
      --line:#dce7f0;
      --bg:#f5f8fb;
      --white:#fff;
      --radius:18px;
      --shadow:0 14px 38px rgba(38,74,109,.09);
      --shadow-hover:0 18px 44px rgba(38,74,109,.15);
      --ease:all .25s ease;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.75;font-size:15px}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(37,99,168,.35);outline-offset:3px}
    .container{width:min(1200px,calc(100% - 40px));margin:0 auto}
    .site-header{height:76px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .nav-wrap{height:76px;display:flex;align-items:center;gap:38px}
    .brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:21px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--blue);color:white;display:grid;place-items:center;font-weight:800;box-shadow:0 7px 16px rgba(37,99,168,.22)}
    .nav-list{display:flex;align-items:center;gap:28px;margin-left:auto}
    .nav-list a{color:#5c7185;font-weight:600;padding:25px 0;position:relative;transition:var(--ease)}
    .nav-list a:after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;background:var(--blue);transform:scaleX(0);transition:var(--ease)}
    .nav-list a:hover,.nav-list a.active{color:var(--blue)}
    .nav-list a:hover:after,.nav-list a.active:after{transform:scaleX(1)}
    .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:11px;font-weight:700;transition:var(--ease)}
    .nav-cta{background:var(--blue);color:#fff;padding:11px 18px;margin-left:4px}
    .nav-cta:hover,.btn-primary:hover{background:var(--blue-dark);box-shadow:0 8px 18px rgba(37,99,168,.22);transform:translateY(-2px)}
    .menu-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--blue);border-radius:9px;padding:8px 11px;font-size:20px}
    .hero{position:relative;overflow:hidden;background:#eaf3fa url('/assets/images/ac862f770308c8da.jpg') center/cover no-repeat;padding:76px 0 58px}
    .hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(245,250,253,.98) 0%,rgba(245,250,253,.92) 48%,rgba(245,250,253,.35) 100%)}
    .hero-inner{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:62px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.08em;margin-bottom:17px}
    .eyebrow:before{content:"";width:22px;height:3px;border-radius:4px;background:var(--orange)}
    h1{font-size:clamp(34px,4.6vw,60px);line-height:1.18;color:var(--ink);letter-spacing:-.04em;margin-bottom:22px}
    .hero-copy{font-size:17px;max-width:650px;color:#4b6378;line-height:1.9}
    .hero-actions{display:flex;gap:13px;margin:29px 0 28px;flex-wrap:wrap}
    .btn{padding:13px 21px}
    .btn-primary{color:#fff;background:var(--blue)}
    .btn-secondary{color:var(--blue);background:#fff;border:1px solid #b8d1e5}
    .btn-secondary:hover{background:var(--blue-light);border-color:var(--blue)}
    .hero-points{display:flex;flex-wrap:wrap;gap:10px}
    .hero-points span,.tag{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.8);border:1px solid #d5e4ef;border-radius:30px;padding:7px 12px;color:#547087;font-size:13px}
    .hero-board{background:rgba(255,255,255,.92);border:1px solid rgba(206,224,237,.9);border-radius:24px;padding:25px;box-shadow:var(--shadow);position:relative}
    .board-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}
    .board-head strong{font-size:18px;color:var(--ink)}
    .status{color:#b97800;background:var(--orange-soft);padding:5px 10px;border-radius:20px;font-size:12px;font-weight:700}
    .roadmap{display:grid;grid-template-columns:repeat(4,1fr);position:relative;margin:22px 0 27px}
    .roadmap:before{content:"";height:2px;background:#bfd7e9;position:absolute;top:13px;left:8%;right:8%}
    .node{position:relative;text-align:center;font-size:12px;color:#6a8092}
    .node i{display:block;width:27px;height:27px;border-radius:50%;background:#fff;border:6px solid #b9d3e8;margin:0 auto 9px;position:relative;z-index:1}
    .node.done i{border-color:var(--blue);background:var(--blue)}
    .node.current i{border-color:var(--orange);background:var(--orange)}
    .board-note{padding:15px;background:var(--blue-light);border-radius:12px;color:#45647d;font-size:13px}
    section{padding:82px 0}
    .section-head{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:30px}
    .section-kicker{color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.08em;margin-bottom:7px}
    h2{font-size:30px;line-height:1.3;color:var(--ink);letter-spacing:-.025em}
    .section-intro{max-width:570px;color:var(--muted)}
    .metrics{background:#fff;border-bottom:1px solid var(--line);padding:25px 0}
    .metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
    .metric{padding:10px 28px;border-right:1px solid var(--line)}
    .metric:first-child{padding-left:0}
    .metric:last-child{border-right:0}
    .metric b{font-size:31px;line-height:1;color:var(--blue);display:block;margin-bottom:7px}
    .metric b em{font-size:14px;font-style:normal;margin-left:3px}
    .metric span{color:var(--muted);font-size:13px}
    .matrix{background:#fff}
    .matrix-grid{display:grid;grid-template-columns:1.25fr .85fr .85fr;grid-template-rows:1fr 1fr;gap:16px}
    .matrix-card{border:1px solid var(--line);border-radius:var(--radius);padding:24px;min-height:145px;transition:var(--ease);position:relative;overflow:hidden}
    .matrix-card:hover,.feature-card:hover,.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
    .matrix-card.featured{grid-row:span 2;background:var(--blue);color:#fff;padding:30px}
    .matrix-card.featured h3{color:#fff;font-size:25px}
    .matrix-card h3{color:var(--ink);font-size:18px;margin:12px 0 6px}
    .matrix-card p{font-size:13px;color:var(--muted);line-height:1.7}
    .matrix-card.featured p{color:#d9ebfa}
    .icon-dot{width:35px;height:35px;display:grid;place-items:center;border-radius:11px;background:var(--orange-soft);color:#c77c00;font-weight:800}
    .matrix-card.featured .icon-dot{background:rgba(255,255,255,.18);color:#fff}
    .text-link{display:inline-block;color:var(--blue);font-size:13px;font-weight:800;margin-top:12px}
    .featured .text-link{color:#fff}
    .contrast{background:#f8fbfd}
    .contrast-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .compare{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px}
    .compare-head{display:flex;justify-content:space-between;align-items:center;color:var(--ink);font-weight:800;margin-bottom:18px}
    .compare-head span{font-size:12px;color:var(--blue);background:var(--blue-light);padding:5px 10px;border-radius:20px}
    .bar-item{margin:18px 0}
    .bar-label{display:flex;justify-content:space-between;font-size:13px;color:#60778b;margin-bottom:6px}
    .bar{height:8px;background:#edf2f6;border-radius:8px;overflow:hidden}
    .bar i{display:block;height:100%;background:var(--blue);border-radius:8px}
    .bar.orange i{background:var(--orange)}
    .timeline{background:#fff}
    .timeline-list{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
    .milestone{border-top:3px solid var(--blue);padding-top:17px;position:relative}
    .milestone:before{content:"";width:10px;height:10px;border-radius:50%;background:var(--orange);position:absolute;top:-7px;left:0}
    .milestone time{font-size:12px;color:var(--blue);font-weight:800}
    .milestone h3{color:var(--ink);font-size:17px;margin:8px 0}
    .milestone p{font-size:13px;color:var(--muted)}
    .news-list{border-top:1px solid var(--line)}
    .news-item{display:grid;grid-template-columns:110px 120px 1fr auto;gap:20px;align-items:center;padding:19px 0;border-bottom:1px solid var(--line)}
    .news-item time{font-size:13px;color:var(--muted)}
    .news-item h3{font-size:17px;color:var(--ink)}
    .news-item p{font-size:13px;color:var(--muted);margin-top:3px}
    .news-arrow{color:var(--blue);font-size:20px}
    .topics{background:#edf5fb}
    .topic-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:18px}
    .topic-card{background:#fff;border-radius:var(--radius);min-height:210px;padding:25px;position:relative;overflow:hidden;transition:var(--ease);border:1px solid #dceaf3}
    .topic-card.big{background:url('/assets/images/7d16cf849a697a23.jpg') center/cover}
    .topic-card.big:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(19,49,78,.8),transparent 70%)}
    .topic-content{position:absolute;z-index:1;bottom:23px;color:#fff}
    .topic-content h3{font-size:23px;margin:7px 0}
    .topic-card:not(.big) h3{color:var(--ink);font-size:18px;margin:15px 0 7px}
    .topic-card p{font-size:13px;color:var(--muted)}
    .topic-card.big p{color:#e1edf6}
    .assurance{background:#fff}
    .assurance-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .assurance-item{padding:22px;border:1px solid var(--line);border-radius:15px;background:#fbfdff}
    .assurance-item strong{display:block;color:var(--ink);margin:11px 0 5px}
    .assurance-item p{font-size:13px;color:var(--muted)}
    .quick{padding-top:65px;padding-bottom:65px}
    .quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .quick-item{background:#fff;border:1px solid var(--line);padding:18px 20px;border-radius:13px;color:var(--ink);font-weight:700}
    .quick-item span{display:block;color:var(--muted);font-size:12px;font-weight:400;margin-top:5px}
    .faq{background:#f8fbfd}
    .faq-grid{max-width:860px}
    details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:11px;padding:0 20px}
    summary{cursor:pointer;list-style:none;padding:17px 0;color:var(--ink);font-weight:700;position:relative;padding-right:28px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";position:absolute;right:0;color:var(--blue);font-size:22px;top:12px}
    details[open]{border-left:3px solid var(--blue);background:#fafdff}
    details[open] summary:after{content:"−"}
    details p{font-size:14px;color:var(--muted);padding:0 0 17px;line-height:1.8}
    .ranking{background:#fff}
    .ranking-layout{display:grid;grid-template-columns:1fr .8fr;gap:30px;align-items:start}
    .rank-list{border-top:1px solid var(--line)}
    .rank-item{display:grid;grid-template-columns:45px 1fr 100px;gap:13px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
    .rank-no{width:30px;height:30px;display:grid;place-items:center;border-radius:9px;background:#eef3f7;color:#617789;font-weight:800}
    .rank-item:nth-child(1) .rank-no{background:var(--orange-soft);color:#b97400}
    .rank-item:nth-child(2) .rank-no{background:#fff0e7;color:#c47d4e}
    .rank-item:nth-child(3) .rank-no{background:var(--blue-light);color:var(--blue)}
    .rank-title{font-weight:800;color:var(--ink)}
    .rank-title small{display:block;color:var(--muted);font-size:12px;font-weight:400}
    .rank-bar{height:6px;background:#edf2f6;border-radius:5px}
    .rank-bar i{display:block;height:100%;background:var(--orange);border-radius:5px}
    .rank-score{text-align:right;color:var(--muted);font-size:12px}
    .rank-aside{background:var(--blue);color:#fff;border-radius:20px;padding:28px;min-height:230px;background-image:url('/assets/images/7951de89cf6dd84d.jpg');background-size:cover;background-position:center}
    .rank-aside h3{font-size:22px;margin-bottom:12px}
    .rank-aside p{color:#d9e9f5;font-size:14px}
    .conversion{padding:70px 0}
    .conversion-box{background:var(--blue-light);border:1px solid #cfe3f2;border-radius:22px;padding:38px 42px;display:grid;grid-template-columns:1fr 1fr;gap:45px;align-items:center}
    .conversion-box h2{margin-bottom:13px}
    .conversion-box p{color:#557087}
    .pref-form{background:#fff;border:1px solid #d6e5f0;border-radius:15px;padding:22px;box-shadow:0 10px 28px rgba(37,99,168,.06)}
    .form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    label{display:block;font-size:12px;color:#597187;font-weight:700;margin-bottom:5px}
    input,select{width:100%;border:1px solid #d5e2ec;border-radius:9px;padding:10px 12px;background:#fff;color:var(--text);outline:none}
    input:focus,select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,168,.1)}
    .form-group{margin-bottom:13px}
    .form-submit{width:100%;margin-top:3px}
    .form-note{font-size:11px;color:#93a4b1;margin-top:10px}
    .closing{padding:48px 0;background:#fff;border-top:1px solid var(--line)}
    .closing-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .closing h2{font-size:22px}
    .closing-links{display:flex;gap:20px;flex-wrap:wrap;color:var(--blue);font-weight:700;font-size:14px}
    footer{background:#edf3f7;padding:43px 0 25px;border-top:1px solid var(--line)}
    .footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:35px;padding-bottom:30px}
    footer h3{font-size:15px;color:var(--ink);margin-bottom:13px}
    footer p,footer a{font-size:13px;color:#7890a2}
    footer a{display:block;margin:8px 0;transition:var(--ease)}
    footer a:hover{color:var(--blue)}
    .footer-brand p{max-width:280px;margin-top:13px;line-height:1.8}
    .copyright{border-top:1px solid #d8e3eb;padding-top:18px;color:#8da0ae;font-size:12px;display:flex;justify-content:space-between;gap:20px}
    .empty-state{display:none}
    @media(max-width:1024px){
      .hero-inner{gap:35px}.matrix-grid{grid-template-columns:1fr 1fr}.matrix-card.featured{grid-row:auto;grid-column:span 2}
      .topic-grid{grid-template-columns:1fr 1fr}.topic-card.big{grid-row:span 2}
      .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
    }
    @media(max-width:768px){
      .container{width:min(100% - 32px,620px)}
      .site-header,.nav-wrap{height:68px}.nav-wrap{gap:15px}.brand{font-size:18px}.brand-mark{width:30px;height:30px}
      .menu-toggle{display:block;margin-left:auto}.nav-list{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;padding:12px 20px 22px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
      .nav-list.open{display:block}.nav-list a{display:block;padding:12px 0}.nav-list a:after{bottom:4px}.nav-cta{display:block;text-align:center;margin:8px 0 0}
      .hero{padding:56px 0 42px}.hero:before{background:rgba(245,250,253,.92)}.hero-inner{grid-template-columns:1fr}.hero-board{max-width:520px}
      section{padding:62px 0}.section-head{display:block}.section-intro{margin-top:12px}
      .metric-row{grid-template-columns:1fr 1fr}.metric{padding:15px;border-bottom:1px solid var(--line)}.metric:first-child{padding-left:15px}.metric:nth-child(2){border-right:0}
      .timeline-list,.assurance-grid{grid-template-columns:1fr 1fr}.news-item{grid-template-columns:85px 100px 1fr}.news-item .news-arrow{display:none}
      .ranking-layout,.conversion-box{grid-template-columns:1fr}.conversion-box{padding:28px 22px;gap:25px}
      .closing-inner{display:block}.closing-links{margin-top:18px}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:520px){
      h1{font-size:34px}.hero-copy{font-size:15px}.hero-actions .btn{width:100%}
      .matrix-grid,.contrast-grid,.topic-grid,.quick-grid{grid-template-columns:1fr}.matrix-card.featured{grid-column:auto}
      .topic-card.big{grid-row:auto}.timeline-list,.assurance-grid{grid-template-columns:1fr}
      .news-item{grid-template-columns:1fr;gap:3px;padding:15px 0}.news-item h3{font-size:16px}
      .rank-item{grid-template-columns:35px 1fr 65px}.rank-bar{display:none}
      .form-row{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-brand{grid-column:span 2}
      .copyright{display:block}.copyright span{display:block;margin-top:5px}
    }

/* roulang page: category1 */
:root{
 --blue:#2563a8;--blue-dark:#174b83;--blue-light:#eaf3fc;--orange:#e9a52d;
 --orange-soft:#fff4dc;--ink:#172c43;--text:#385069;--muted:#7d91a5;
 --line:#dce7f0;--bg:#f5f8fb;--white:#fff;--radius:18px;
 --shadow:0 14px 38px rgba(38,74,109,.09);--shadow-hover:0 18px 44px rgba(38,74,109,.15);
 --ease:all .25s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.75;font-size:15px}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(1200px,calc(100% - 40px));margin:0 auto}
.site-header{height:76px;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
.nav-wrap{height:76px;display:flex;align-items:center;gap:38px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:21px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:800;box-shadow:0 7px 16px rgba(37,99,168,.22)}
.nav-list{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-list a{color:#5c7185;font-weight:600;padding:25px 0;position:relative;transition:var(--ease)}
.nav-list a:after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;background:var(--blue);transform:scaleX(0);transition:var(--ease)}
.nav-list a:hover,.nav-list a.active{color:var(--blue)}
.nav-list a:hover:after,.nav-list a.active:after{transform:scaleX(1)}
.nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:11px;font-weight:700;transition:var(--ease)}
.nav-cta{background:var(--blue);color:#fff!important;padding:11px 18px!important;margin-left:4px}
.nav-cta:after{display:none}
.nav-cta:hover,.btn-primary:hover{background:var(--blue-dark);box-shadow:0 8px 18px rgba(37,99,168,.22);transform:translateY(-2px)}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--blue);border-radius:9px;padding:8px 11px;font-size:20px}
main{overflow:hidden}
.page-intro{padding:72px 0 48px;background:#fff;border-bottom:1px solid var(--line)}
.intro-layout{display:grid;grid-template-columns:1fr .84fr;gap:65px;align-items:center}
.eyebrow,.section-kicker{color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.1em}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:14px}
.eyebrow:before{content:"";width:22px;height:3px;border-radius:3px;background:var(--orange)}
h1,h2,h3{color:var(--ink);line-height:1.3}
h1{font-size:clamp(34px,4.2vw,56px);letter-spacing:-.035em;margin-bottom:18px}
h2{font-size:clamp(25px,3vw,35px);letter-spacing:-.02em}
h3{font-size:18px}
.intro-copy{font-size:17px;color:#536b7e;max-width:650px}
.intro-note{margin-top:24px;display:flex;gap:10px;flex-wrap:wrap}
.tag{display:inline-flex;align-items:center;border:1px solid #d5e4ef;border-radius:30px;padding:6px 12px;color:#547087;background:#f8fbfd;font-size:13px}
.intro-visual{min-height:270px;border-radius:24px;background:url('/assets/images/7951de89cf6dd84d.jpg') center/cover;position:relative;overflow:hidden;box-shadow:var(--shadow)}
.intro-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(23,75,131,.08),rgba(23,75,131,.7))}
.visual-card{position:absolute;z-index:1;left:25px;bottom:24px;color:#fff}
.visual-card strong{font-size:26px;display:block}
.visual-card span{font-size:13px;color:#e7f2fb}
section{padding:76px 0}
.section-head{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:28px}
.section-intro{max-width:570px;color:var(--muted)}
.filter-bar{display:flex;gap:12px;flex-wrap:wrap;padding:18px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 22px rgba(38,74,109,.04)}
.filter-bar label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.filter-bar select,.filter-bar button{border:1px solid var(--line);background:#fff;color:var(--text);border-radius:10px;padding:10px 14px;min-width:145px}
.filter-bar button{color:var(--blue);font-weight:700}
.filter-bar button.active,.filter-bar button:hover{background:var(--blue);border-color:var(--blue);color:#fff}
.feature-layout{display:grid;grid-template-columns:245px 1fr;gap:25px;align-items:start}
.topic-index{background:var(--blue);border-radius:var(--radius);padding:25px;color:#dcecf9;box-shadow:var(--shadow)}
.topic-index h3{color:#fff;margin-bottom:16px}
.topic-index a{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.18);font-size:14px}
.topic-index a:hover{color:#fff;background:rgba(255,255,255,.08);padding-left:8px}
.feature-list{display:grid;gap:14px}
.feature-card{display:grid;grid-template-columns:150px 1fr auto;gap:20px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:15px;transition:var(--ease)}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.cover{height:112px;border-radius:12px;overflow:hidden;background:#dceaf4}
.cover img{width:100%;height:100%;object-fit:cover}
.card-meta{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0}
.card-meta .tag{padding:4px 9px;font-size:12px}
.status{color:#bb7811;background:var(--orange-soft);border-color:#f1d49b}
.feature-card p{color:var(--muted);font-size:13px;margin-top:4px}
.card-action{color:var(--blue);font-weight:800;font-size:13px;white-space:nowrap}
.ranking-section{background:#edf5fb}
.rank-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:24px}
.rank-list,.trend-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.rank-item{display:grid;grid-template-columns:40px 1fr auto;gap:12px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
.rank-item:last-child{border-bottom:0}
.rank-no{width:30px;height:30px;border-radius:9px;background:#edf4f9;color:var(--blue);display:grid;place-items:center;font-weight:800}
.rank-item:nth-child(1) .rank-no{background:#ffe4a8;color:#9a6812}
.rank-item:nth-child(2) .rank-no{background:#e9eef2;color:#536a7c}
.rank-item:nth-child(3) .rank-no{background:#f7dfc4;color:#a86a2a}
.rank-item strong{display:block;color:var(--ink)}
.rank-item small{color:var(--muted)}
.rank-value{font-size:12px;color:var(--blue);font-weight:700}
.trend-panel{background:url('/assets/images/0362429972408fd4.jpg') center/cover;position:relative;color:#fff;overflow:hidden}
.trend-panel:before{content:"";position:absolute;inset:0;background:rgba(23,75,131,.8)}
.trend-content{position:relative}
.trend-content h3{color:#fff;margin-bottom:8px}
.bar-item{margin:21px 0}
.bar-label{display:flex;justify-content:space-between;font-size:13px;margin-bottom:6px}
.bar-track{height:8px;border-radius:8px;background:rgba(255,255,255,.24);overflow:hidden}
.bar-fill{height:100%;border-radius:8px;background:var(--orange)}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.timeline-item{position:relative;padding:23px 20px 20px;background:#fff;border:1px solid var(--line);border-radius:16px}
.timeline-item:before{content:"";width:11px;height:11px;background:var(--orange);border:3px solid #fff;box-shadow:0 0 0 1px var(--orange);border-radius:50%;position:absolute;top:-7px;left:21px}
.timeline-item time{font-size:12px;color:var(--blue);font-weight:700}
.timeline-item h3{font-size:17px;margin:10px 0 7px}
.timeline-item p{font-size:13px;color:var(--muted)}
.topic-grid{display:grid;grid-template-columns:1.35fr .82fr .82fr;gap:18px}
.topic-card{min-height:205px;border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff;position:relative;overflow:hidden;transition:var(--ease)}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.topic-card.big{background:url('/assets/images/58ca595aa32e44ea.jpg') center/cover;color:#fff}
.topic-card.big:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(19,49,78,.82),transparent 75%)}
.topic-card.big>*{position:relative;z-index:1}
.topic-card h3{margin:14px 0 8px}
.topic-card p{font-size:13px;color:var(--muted)}
.topic-card.big h3{color:#fff;font-size:23px}
.topic-card.big p{color:#e1edf6}
.topic-card .text-link{position:absolute;bottom:22px;color:var(--blue);font-size:13px;font-weight:800}
.topic-card.big .text-link{color:#fff}
.faq-section{background:#fff}
.faq-list{max-width:900px;border-top:1px solid var(--line)}
details{border-bottom:1px solid var(--line);padding:19px 0}
summary{cursor:pointer;color:var(--ink);font-weight:700;list-style:none;padding-right:32px;position:relative}
summary::-webkit-details-marker{display:none}
summary:after{content:"＋";position:absolute;right:2px;color:var(--blue);font-size:20px;top:-4px}
details[open]{background:var(--blue-light);border-left:3px solid var(--blue);padding:17px 18px}
details[open] summary:after{content:"－"}
details p{color:var(--muted);font-size:14px;margin-top:9px;padding-right:25px}
.conversion{background:var(--blue-light);padding:65px 0}
.convert-box{display:grid;grid-template-columns:1fr 1.05fr;gap:45px;align-items:center}
.convert-box h2{margin:8px 0 12px}
.convert-box p{color:#5c7487}
.preference-form{display:grid;grid-template-columns:1fr 1fr;gap:13px;background:#fff;padding:23px;border:1px solid #d4e6f2;border-radius:18px;box-shadow:var(--shadow)}
.preference-form label{font-size:13px;color:var(--ink);font-weight:700}
.preference-form input,.preference-form select{display:block;width:100%;margin-top:6px;border:1px solid var(--line);border-radius:9px;padding:11px 12px;color:var(--text);background:#fff}
.preference-form input:focus,.preference-form select:focus{outline:3px solid rgba(37,99,168,.18);border-color:var(--blue)}
.form-full{grid-column:1/-1}
.form-submit{border:0;background:var(--blue);color:#fff;padding:12px;border-radius:10px;font-weight:700}
.form-submit:hover{background:var(--blue-dark)}
.form-note{font-size:12px!important;color:var(--muted)!important;margin-top:0}
footer{background:#edf3f7;padding:52px 0 20px;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{color:var(--muted);font-size:13px;margin-top:14px;max-width:280px}
footer h3{font-size:15px;margin-bottom:12px}
footer a:not(.brand){display:block;color:#60788a;font-size:13px;margin:8px 0}
footer a:hover{color:var(--blue)}
.copyright{display:flex;justify-content:space-between;gap:15px;border-top:1px solid var(--line);margin-top:35px;padding-top:18px;color:#8a9cab;font-size:12px}
.focus-visible:focus,.btn:focus,.nav-cta:focus,.menu-toggle:focus,summary:focus{outline:3px solid rgba(233,165,45,.55);outline-offset:3px}
.empty-state,.loading-state{padding:28px;text-align:center;border:1px dashed var(--line);border-radius:14px;color:var(--muted);background:#fff}
@media(max-width:1024px){
 .nav-wrap{gap:20px}.nav-list{gap:17px}.intro-layout{gap:35px}
 .feature-layout{grid-template-columns:210px 1fr}.timeline{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
 .container{width:min(100% - 32px,620px)}.site-header,.nav-wrap{height:68px}
 .nav-wrap{justify-content:space-between}.menu-toggle{display:block}
 .nav-list{display:none;position:absolute;left:16px;right:16px;top:76px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}
 .nav-list.open{display:flex}.nav-list a{padding:12px 4px}.nav-list a:after{display:none}.nav-cta{margin:5px 0!important;text-align:center}
 .intro-layout,.rank-grid,.convert-box{grid-template-columns:1fr}.page-intro{padding:50px 0 38px}
 section{padding:58px 0}.section-head{display:block}.section-intro{margin-top:10px}
 .feature-layout{grid-template-columns:1fr}.topic-index{display:flex;gap:10px;overflow:auto;align-items:center}.topic-index h3{white-space:nowrap;margin:0 10px 0 0}.topic-index a{white-space:nowrap;border:0;padding:7px 10px;background:rgba(255,255,255,.1);border-radius:8px}
 .topic-grid{grid-template-columns:1fr 1fr}.topic-card.big{grid-column:1/-1}
 .preference-form{grid-template-columns:1fr}.form-full{grid-column:auto}.copyright{display:block}.copyright span{display:block;margin-top:5px}
}
@media(max-width:520px){
 h1{font-size:36px}.intro-visual{min-height:220px}.feature-card{grid-template-columns:92px 1fr;gap:13px}.cover{height:100px}.card-action{grid-column:2}
 .timeline{grid-template-columns:1fr}.topic-grid{grid-template-columns:1fr}.topic-card.big{grid-column:auto}
 .filter-bar select,.filter-bar button{flex:1;min-width:120px}.footer-grid{grid-template-columns:1fr 1fr;gap:24px}
}

/* roulang page: category2 */
:root{
 --blue:#2563a8;--blue-dark:#174b83;--blue-light:#eaf3fc;
 --orange:#e9a52d;--orange-soft:#fff4dc;--ink:#172c43;
 --text:#385069;--muted:#7d91a5;--line:#dce7f0;--bg:#f5f8fb;
 --white:#fff;--radius:18px;--shadow:0 14px 38px rgba(38,74,109,.09);
 --shadow-hover:0 18px 44px rgba(38,74,109,.15);--ease:all .25s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.75;font-size:15px}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(1200px,calc(100% - 40px));margin:0 auto}
.site-header{height:76px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
.nav-wrap{height:76px;display:flex;align-items:center;gap:38px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:21px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:800;box-shadow:0 7px 16px rgba(37,99,168,.22)}
.nav-list{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-list a{color:#5c7185;font-weight:600;padding:25px 0;position:relative;transition:var(--ease)}
.nav-list a:after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;background:var(--blue);transform:scaleX(0);transition:var(--ease)}
.nav-list a:hover,.nav-list a.active{color:var(--blue)}
.nav-list a:hover:after,.nav-list a.active:after{transform:scaleX(1)}
.nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:11px;font-weight:700;transition:var(--ease)}
.nav-cta{background:var(--blue);color:#fff!important;padding:11px 18px;margin-left:4px}
.nav-cta:hover,.btn-primary:hover{background:var(--blue-dark);box-shadow:0 8px 18px rgba(37,99,168,.22);transform:translateY(-2px)}
.nav-cta:after{display:none}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--blue);border-radius:9px;padding:8px 11px;font-size:20px}
main{overflow:hidden}
.page-head{padding:74px 0 64px;background:#eaf3fa url('/assets/images/0362429972408fd4.jpg') center/cover no-repeat;position:relative}
.page-head:before{content:"";position:absolute;inset:0;background:rgba(244,249,253,.91)}
.page-head .container{position:relative}
.head-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:60px;align-items:center}
.eyebrow,.section-kicker{display:block;color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.08em;margin-bottom:9px}
.eyebrow:before{content:"";display:inline-block;width:22px;height:3px;border-radius:3px;background:var(--orange);vertical-align:middle;margin-right:8px}
h1{font-size:clamp(34px,4.4vw,56px);line-height:1.2;color:var(--ink);letter-spacing:-.035em;margin-bottom:19px}
h2{font-size:clamp(25px,3vw,35px);line-height:1.3;color:var(--ink);letter-spacing:-.02em}
h3{color:var(--ink);line-height:1.4}
.head-copy{font-size:17px;max-width:650px;color:#4b6378}
.head-note{background:rgba(255,255,255,.9);border:1px solid #d4e5f1;border-radius:22px;padding:26px;box-shadow:var(--shadow)}
.note-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:17px}
.note-top strong{font-size:20px;color:var(--ink)}
.status{color:#b97800;background:var(--orange-soft);border-radius:30px;padding:5px 10px;font-size:12px;font-weight:700}
.note-row{display:flex;justify-content:space-between;gap:15px;padding:10px 0;color:var(--muted);font-size:13px}
.note-row b{color:var(--blue);font-size:18px}
section{padding:78px 0}
.section-head{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:29px}
.section-intro{max-width:570px;color:var(--muted)}
.filter-section{background:#fff;border-bottom:1px solid var(--line)}
.filter-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;border:1px solid var(--line);background:#fbfdff;padding:17px 19px;border-radius:15px}
.filter-group{display:flex;gap:9px;flex-wrap:wrap}
.filter-btn,.sort-select{border:1px solid #cbdde9;background:#fff;color:#5b7286;border-radius:9px;padding:9px 14px;font-size:13px;transition:var(--ease)}
.filter-btn:hover,.filter-btn.active,.sort-select:focus{border-color:var(--blue);color:var(--blue);background:var(--blue-light)}
.update-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:25px;align-items:start}
.update-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.date-group{padding:23px 27px 9px;color:var(--blue);font-size:13px;font-weight:800;background:#fbfdff}
.update-item{display:grid;grid-template-columns:92px 1fr auto;gap:20px;align-items:center;padding:22px 27px;border-top:1px solid var(--line);transition:var(--ease)}
.update-item:hover{background:#f9fcff}
.update-time{color:var(--muted);font-size:13px}
.update-item h3{font-size:18px;margin-bottom:5px}
.update-item p{font-size:13px;color:var(--muted)}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:9px}
.tag{background:#f3f8fc;border:1px solid #dceaf3;border-radius:30px;color:#5a7890;font-size:12px;padding:4px 9px}
.tag.orange{background:var(--orange-soft);border-color:#f2d99b;color:#a66c06}
.arrow{font-size:22px;color:var(--blue)}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:var(--shadow)}
.side-card h3{font-size:20px;margin-bottom:18px}
.rank-list{list-style:none}
.rank-list li{display:grid;grid-template-columns:30px 1fr auto;gap:10px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}
.rank-list li:last-child{border-bottom:0}
.rank-num{width:25px;height:25px;border-radius:8px;background:#edf4fa;color:var(--blue);display:grid;place-items:center;font-weight:800;font-size:13px}
.rank-list li:nth-child(1) .rank-num{background:var(--orange);color:#fff}
.rank-list li:nth-child(2) .rank-num{background:#f5d58f;color:#805b17}
.rank-list li:nth-child(3) .rank-num{background:#dcecf6}
.rank-title{font-weight:700;color:var(--ink);font-size:14px}
.rank-list small{color:var(--muted);font-size:12px}
.progress{height:6px;border-radius:10px;background:#edf3f7;margin-top:7px;overflow:hidden}
.progress i{height:100%;display:block;background:var(--blue);border-radius:10px}
.progress.orange i{background:var(--orange)}
.timeline-section{background:#f0f6fa}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.timeline:before{content:"";height:2px;background:#c6dceb;position:absolute;left:8%;right:8%;top:13px}
.timeline-card{position:relative;padding:42px 22px 0}
.timeline-dot{position:absolute;top:5px;left:22px;width:18px;height:18px;border-radius:50%;background:var(--blue);border:5px solid #dcecf8;z-index:1}
.timeline-card:nth-child(2) .timeline-dot,.timeline-card:nth-child(4) .timeline-dot{background:var(--orange);border-color:#f9e7bd}
.timeline-card time{font-size:12px;color:var(--muted)}
.timeline-card h3{font-size:17px;margin:8px 0}
.timeline-card p{font-size:13px;color:var(--muted)}
.topic-section{background:#fff}
.topic-grid{display:grid;grid-template-columns:1.45fr .8fr .8fr;gap:18px}
.topic-card{min-height:210px;border-radius:var(--radius);padding:25px;position:relative;overflow:hidden;border:1px solid #dceaf3;transition:var(--ease)}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.topic-card.large{background:url('/assets/images/7d16cf849a697a23.jpg') center/cover;color:#fff}
.topic-card.large:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(19,49,78,.86),rgba(19,49,78,.08))}
.topic-content{position:absolute;z-index:1;left:25px;right:25px;bottom:22px}
.topic-card:not(.large){background:#f7fbfe}
.topic-card:not(.large) h3{margin:17px 0 7px;font-size:18px}
.topic-card p{font-size:13px;color:var(--muted)}
.topic-card.large p{color:#deedf7}
.faq-section{background:#f5f8fb}
.faq-list{max-width:900px;margin:0 auto}
details{background:#fff;border:1px solid var(--line);border-radius:13px;margin-bottom:11px;transition:var(--ease)}
details[open]{border-left:4px solid var(--blue);background:#fafdff}
summary{cursor:pointer;list-style:none;padding:18px 22px;color:var(--ink);font-weight:700;position:relative;padding-right:50px}
summary::-webkit-details-marker{display:none}
summary:after{content:"＋";position:absolute;right:20px;color:var(--blue);font-size:20px;top:14px}
details[open] summary:after{content:"－"}
details p{padding:0 22px 20px;color:var(--muted);font-size:14px}
.cta-section{padding:68px 0}
.cta-box{background:var(--blue-light);border:1px solid #cfe2f1;border-radius:24px;padding:42px 48px;display:flex;justify-content:space-between;align-items:center;gap:30px}
.cta-box h2{margin-bottom:9px}
.cta-box p{color:#5c758b;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap}
.btn{padding:13px 21px}
.btn-primary{color:#fff;background:var(--blue)}
.btn-secondary{color:var(--blue);background:#fff;border:1px solid #b8d1e5}
.btn-secondary:hover{background:var(--blue-light);border-color:var(--blue)}
.btn:focus,.filter-btn:focus,summary:focus,.nav-list a:focus{outline:3px solid rgba(37,99,168,.25);outline-offset:3px}
footer{background:#eaf1f6;border-top:1px solid var(--line);padding:50px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
.footer-brand p{color:var(--muted);font-size:13px;margin-top:15px;max-width:270px}
footer h3{font-size:14px;margin-bottom:14px}
footer a:not(.brand){display:block;color:#647c90;font-size:13px;margin:9px 0;transition:var(--ease)}
footer a:not(.brand):hover{color:var(--blue);transform:translateX(2px)}
.copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #d4e1ea;margin-top:35px;padding-top:18px;color:#8799a8;font-size:12px}
@media(max-width:1024px){
 .nav-wrap{gap:20px}.nav-list{gap:17px}.head-grid{gap:30px}
 .update-layout{grid-template-columns:1fr}.topic-grid{grid-template-columns:1fr 1fr}
 .topic-card.large{grid-column:span 2}.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}
}
@media(max-width:768px){
 .site-header,.nav-wrap{height:68px}.nav-list{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 20px 18px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}
 .nav-list.open{display:flex}.nav-list a{padding:13px 0}.nav-list a:after{bottom:6px}.nav-cta{text-align:center;margin-top:7px}
 .menu-toggle{display:block;margin-left:auto}.head-grid{grid-template-columns:1fr}.page-head{padding:55px 0 48px}
 .timeline{grid-template-columns:1fr 1fr;gap:28px}.timeline:before{display:none}.timeline-card{padding-top:36px}
 .cta-box{display:block;padding:33px 27px}.cta-actions{margin-top:22px}
 .footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:6px}
}
@media(max-width:520px){
 .container{width:min(100% - 32px,1200px)}section{padding:58px 0}
 h1{font-size:35px}.section-head{display:block}.section-intro{margin-top:10px}
 .update-item{grid-template-columns:1fr auto;gap:7px;padding:19px}.update-time{grid-column:1/-1}
 .update-item p{font-size:12px}.topic-grid{grid-template-columns:1fr}.topic-card.large{grid-column:auto}
 .timeline{grid-template-columns:1fr}.filter-bar{align-items:stretch}.filter-group{width:100%}.filter-btn{flex:1}
 .sort-select{width:100%}.footer-grid{grid-template-columns:1fr}.copyright{font-size:11px}
}