/* roulang page: index */
:root {
      --navy:#12233f; --blue:#2d6cdf; --cyan:#39a9c9; --ink:#1c2939;
      --muted:#718096; --paper:#f5f8fc; --white:#fff; --line:#e4ebf3;
      --soft:#edf4ff; --gold:#d99a3d; --radius:18px;
      --shadow:0 16px 40px rgba(24,48,84,.09);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.75}
    a{text-decoration:none;color:inherit;transition:.25s ease}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    .container{max-width:1180px}
    .topbar{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
    .navbar{min-height:76px}
    .brand-mark{width:38px;height:38px;border-radius:11px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800;box-shadow:0 8px 18px rgba(18,35,63,.2)}
    .brand-name{font-weight:800;color:var(--navy);letter-spacing:.2px}
    .nav-link{color:#607087!important;font-size:14px;font-weight:600;padding:10px 14px!important;border-radius:9px}
    .nav-link:hover,.nav-link.active{color:var(--blue)!important;background:var(--soft)}
    .nav-search{border:1px solid var(--line);border-radius:10px;padding:8px 12px;color:var(--muted);font-size:13px}
    .hero{position:relative;min-height:590px;color:#fff;display:flex;align-items:center;overflow:hidden;background:var(--navy)}
    .hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,25,48,.92) 0%,rgba(12,35,65,.7) 46%,rgba(12,35,65,.15) 100%),url("https://images.unsplash.com/photo-1551488831-00ddcb6c6bd3?auto=format&fit=crop&w=1800&q=88") center/cover}
    .hero .container{position:relative;z-index:1}
    .hero-kicker{display:inline-flex;align-items:center;gap:8px;color:#c9e7ff;font-size:13px;font-weight:700;margin-bottom:18px}
    .hero-kicker i{color:#6fd2e5}
    h1{font-size:clamp(2.3rem,5vw,4.6rem);line-height:1.14;letter-spacing:0;font-weight:800;max-width:720px;margin:0 0 20px}
    .hero h1 span{color:#7bd7e7}
    .hero-copy{font-size:17px;max-width:650px;color:#d9e8f5;margin-bottom:30px}
    .btn-main,.btn-lightline{border-radius:10px;padding:12px 20px;font-weight:700;border:1px solid transparent}
    .btn-main{background:#55c2d1;color:#09203b}.btn-main:hover{background:#83dbe5;color:#09203b;transform:translateY(-2px)}
    .btn-lightline{border-color:rgba(255,255,255,.35);color:#fff}.btn-lightline:hover{background:#fff;color:var(--navy)}
    .hero-stats{display:flex;gap:34px;margin-top:38px;border-top:1px solid rgba(255,255,255,.2);padding-top:22px}
    .hero-stat strong{display:block;font-size:24px;color:#fff}.hero-stat small{color:#b9cfdf}
    section{padding:88px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:34px}
    .eyebrow{color:var(--blue);font-size:12px;font-weight:800;letter-spacing:1.5px;text-transform:uppercase}
    h2{font-size:clamp(1.7rem,3vw,2.45rem);line-height:1.25;margin:8px 0 0;color:var(--navy);font-weight:800}
    .section-intro{max-width:590px;color:var(--muted);margin:12px 0 0}
    .link-more{color:var(--blue);font-weight:700;font-size:14px;white-space:nowrap}
    .link-more:hover{color:var(--navy)}
    .metric-band{background:#fff;border-bottom:1px solid var(--line);padding:25px 0}
    .metric{display:flex;align-items:center;gap:15px;border-right:1px solid var(--line);padding:8px 25px}
    .metric:last-child{border-right:0}.metric i{font-size:24px;color:var(--blue)}
    .metric strong{display:block;color:var(--navy);font-size:23px;line-height:1.2}.metric span{font-size:12px;color:var(--muted)}
    .content-section{background:#fff}.content-section.alt{background:var(--paper)}
    .visual-card{position:relative;border-radius:var(--radius);overflow:hidden;min-height:350px;background:#dce8f4;box-shadow:var(--shadow)}
    .visual-card img{width:100%;height:100%;object-fit:cover;min-height:350px}
    .visual-card:after{content:"";position:absolute;inset:45% 0 0;background:linear-gradient(transparent,rgba(7,24,48,.8))}
    .visual-caption{position:absolute;left:25px;right:25px;bottom:22px;color:#fff;z-index:1}
    .visual-caption h3{font-size:23px;margin:6px 0}.visual-caption p{font-size:13px;margin:0;color:#dbe8f5}
    .latest-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
    .item-card,.scene-card,.news-card,.quote-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.28s ease}
    .item-card:hover,.scene-card:hover,.news-card:hover,.quote-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#c8d9ef}
    .item-image{height:205px;position:relative;overflow:hidden;background:#e5edf6}
    .item-image img{width:100%;height:100%;object-fit:cover;transition:.35s}
    .item-card:hover .item-image img{transform:scale(1.05)}
    .badge-status{position:absolute;top:13px;left:13px;background:#fff;color:var(--blue);font-size:11px;font-weight:800;padding:4px 8px;border-radius:6px}
    .item-body{padding:16px}.item-body h3{font-size:16px;color:var(--navy);margin:0 0 8px;font-weight:800}
    .meta{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px}.score{color:var(--gold);font-weight:800}
    .matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .scene-card{padding:25px;min-height:178px}.scene-card i{color:var(--blue);font-size:23px;margin-bottom:20px}.scene-card h3{font-size:18px;margin:0 0 8px;color:var(--navy)}.scene-card p{font-size:13px;color:var(--muted);margin:0}
    .rank-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .rank-row{display:grid;grid-template-columns:50px 1fr 100px 75px 100px;align-items:center;gap:15px;padding:16px 22px;border-bottom:1px solid var(--line);transition:.2s}.rank-row:last-child{border:0}.rank-row:hover{background:#f7faff}
    .rank-num{font-size:20px;font-weight:800;color:#a9b7c8}.rank-row:nth-child(-n+3) .rank-num{color:var(--blue)}.rank-title{font-weight:700;color:var(--navy)}.rank-sub{font-size:12px;color:var(--muted)}.rank-hot{font-size:12px;color:#e18c42}.rank-score{color:var(--gold);font-weight:800}.category-tag{font-size:11px;color:var(--blue);background:var(--soft);padding:4px 8px;border-radius:6px;width:max-content}
    .news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.news-card{display:flex;min-height:118px}.news-card img{width:125px;object-fit:cover}.news-body{padding:15px}.news-body h3{font-size:15px;line-height:1.45;color:var(--navy);margin:0 0 7px}.news-body time{color:var(--muted);font-size:12px}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:2px solid #d8e5f3}.step{padding:25px 20px 0;position:relative}.step:before{content:"";width:12px;height:12px;background:var(--blue);border:3px solid #dceaff;border-radius:50%;position:absolute;top:-7px;left:20px}.step strong{display:block;color:var(--navy);margin-bottom:8px}.step p{font-size:13px;color:var(--muted);margin:0}
    .quote-card{padding:23px}.quote-card p{font-size:14px;color:#53657b;margin:0 0 15px}.quote-user{font-size:13px;font-weight:700;color:var(--navy)}
    .faq .accordion-item{border:1px solid var(--line);margin-bottom:11px;border-radius:12px!important;overflow:hidden}.accordion-button{font-weight:700;color:var(--navy);box-shadow:none!important;background:#fff}.accordion-button:not(.collapsed){color:var(--blue);background:var(--soft)}.accordion-body{font-size:14px;color:var(--muted)}
    .contact-band{background:var(--navy);color:#fff;padding:65px 0}.contact-band h2{color:#fff}.contact-band p{color:#bfd0e0}.contact-form{background:#fff;border-radius:var(--radius);padding:25px}.form-control{border-color:var(--line);border-radius:9px;padding:11px 13px;font-size:14px}.form-control:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(45,108,223,.12)}
    footer{background:#0d1b30;color:#9db0c5;padding:55px 0 22px}.footer-title{color:#fff;font-weight:800;margin-bottom:15px}.footer-link{display:block;color:#9db0c5;font-size:13px;margin:7px 0}.footer-link:hover{color:#7bd7e7}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:18px;font-size:12px;display:flex;justify-content:space-between;gap:15px}
    :focus-visible{outline:3px solid rgba(57,169,201,.45);outline-offset:3px}
    @media(max-width:992px){.latest-grid{grid-template-columns:repeat(3,1fr)}.matrix{grid-template-columns:repeat(2,1fr)}.news-grid{grid-template-columns:repeat(2,1fr)}.nav-search{display:none}.hero{min-height:540px}}
    @media(max-width:768px){section{padding:62px 0}.section-head{display:block}.section-head .link-more{display:inline-block;margin-top:15px}.metric{border-right:0;border-bottom:1px solid var(--line);padding:12px 0}.metric:last-child{border-bottom:0}.latest-grid{grid-template-columns:repeat(2,1fr)}.hero-stats{gap:18px}.hero-stat strong{font-size:19px}.rank-row{grid-template-columns:35px 1fr 70px;padding:14px 15px}.rank-score,.category-tag{display:none}.timeline{grid-template-columns:repeat(2,1fr);row-gap:25px}.contact-band .row{gap:25px}}
    @media(max-width:520px){.brand-name{font-size:14px}.latest-grid,.matrix,.news-grid{grid-template-columns:1fr}.hero{min-height:650px}.hero-copy{font-size:15px}.hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.hero-stat{border-bottom:1px solid rgba(255,255,255,.2);padding-bottom:10px}.visual-card,.visual-card img{min-height:270px}.timeline{grid-template-columns:1fr}.news-card img{width:110px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}}

/* roulang page: category1 */
:root{--navy:#12233f;--blue:#2d6cdf;--cyan:#39a9c9;--ink:#1c2939;--muted:#718096;--paper:#f5f8fc;--white:#fff;--line:#e4ebf3;--soft:#edf4ff;--gold:#d99a3d;--radius:18px;--shadow:0 16px 40px rgba(24,48,84,.09)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.75}
a{text-decoration:none;color:inherit;transition:.25s ease}
img{max-width:100%;display:block}
button,input{font:inherit}
.container{max-width:1180px}
.topbar{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.navbar{min-height:76px}
.brand-mark{width:38px;height:38px;border-radius:11px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800;box-shadow:0 8px 18px rgba(18,35,63,.2)}
.brand-name{font-weight:800;color:var(--navy);letter-spacing:.2px}
.nav-link{color:#607087!important;font-size:14px;font-weight:600;padding:10px 14px!important;border-radius:9px}
.nav-link:hover,.nav-link.active{color:var(--blue)!important;background:var(--soft)}
.nav-search{border:1px solid var(--line);border-radius:10px;padding:8px 12px;color:var(--muted);font-size:13px}
.page-hero{padding:86px 0 78px;background:#fff;border-bottom:1px solid var(--line)}
.eyebrow{color:var(--blue);font-size:12px;font-weight:800;letter-spacing:1.5px}
.page-hero h1{font-size:clamp(2.3rem,5vw,4.5rem);line-height:1.12;color:var(--navy);font-weight:850;margin:18px 0}
.page-hero h1 span{color:var(--blue)}
.page-hero p{max-width:690px;color:var(--muted);font-size:17px;margin:0}
.hero-panel{background:var(--navy);border-radius:var(--radius);padding:28px;color:#fff;box-shadow:var(--shadow)}
.hero-panel .panel-label{color:#8dd9e5;font-size:12px;font-weight:800;letter-spacing:1px}
.hero-panel strong{display:block;font-size:30px;margin:10px 0 2px}
.hero-panel small{color:#b9cfdf}
.panel-line{height:1px;background:rgba(255,255,255,.16);margin:22px 0}
.panel-row{display:flex;justify-content:space-between;gap:12px;color:#d9e8f5;font-size:14px;margin:10px 0}
.panel-row b{color:#7bd7e7}
section{padding:78px 0}
.content-section{background:#fff}
.content-section.alt{background:var(--paper)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:32px}
.section-head h2{color:var(--navy);font-size:30px;font-weight:800;margin:8px 0 0}
.section-intro{max-width:590px;color:var(--muted);margin:10px 0 0}
.btn-main,.btn-lightline{border-radius:10px;padding:12px 20px;font-weight:700;border:1px solid transparent;display:inline-flex;align-items:center;gap:8px}
.btn-main{background:#55c2d1;color:#09203b}
.btn-main:hover{background:#83dbe5;color:#09203b;transform:translateY(-2px)}
.btn-lightline{border-color:var(--line);color:var(--navy);background:#fff}
.btn-lightline:hover{background:var(--soft);color:var(--blue)}
.category-feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.category-feature img{width:100%;height:310px;object-fit:cover}
.feature-copy{padding:27px}
.feature-copy h3{color:var(--navy);font-size:25px;margin:0 0 12px}
.feature-copy p{color:var(--muted);margin:0 0 20px}
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.category-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;min-height:205px;transition:.28s ease}
.category-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#c8d9ef}
.category-icon{width:46px;height:46px;border-radius:13px;background:var(--soft);color:var(--blue);display:grid;place-items:center;font-size:19px;margin-bottom:20px}
.category-card h3{font-size:18px;color:var(--navy);margin:0 0 8px}
.category-card p{font-size:13px;color:var(--muted);margin:0}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.compare-card{padding:25px;border-radius:var(--radius);border:1px solid var(--line);background:#fff}
.compare-card.dark{background:var(--navy);color:#fff;border-color:var(--navy)}
.compare-card h3{font-size:20px;margin:0 0 16px;color:var(--navy)}
.compare-card.dark h3{color:#fff}
.data-line{display:flex;justify-content:space-between;gap:20px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
.dark .data-line{border-color:rgba(255,255,255,.15);color:#cbd9e8}
.data-line:last-child{border-bottom:0}
.data-line b{color:var(--blue)}
.dark .data-line b{color:#7bd7e7}
.timeline{border-left:2px solid #c8d9ef;padding-left:28px}
.timeline-item{position:relative;padding:0 0 27px}
.timeline-item:before{content:"";position:absolute;left:-36px;top:8px;width:13px;height:13px;border-radius:50%;background:var(--blue);border:3px solid #dce9fb}
.timeline-item h3{font-size:18px;color:var(--navy);margin:0 0 6px}
.timeline-item p{color:var(--muted);font-size:14px;margin:0}
.topic-list{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}
.topic-item{display:flex;align-items:center;gap:16px;padding:17px;background:#fff;border:1px solid var(--line);border-radius:13px}
.topic-item i{color:var(--blue);font-size:18px}
.topic-item strong{color:var(--navy);display:block}
.topic-item small{color:var(--muted)}
.quote-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;height:100%}
.quote-card p{font-size:14px;color:#53657b;margin:0 0 15px}
.quote-card strong{font-size:13px;color:var(--navy)}
.faq .accordion-item{border:1px solid var(--line);margin-bottom:11px;border-radius:12px!important;overflow:hidden}
.accordion-button{font-weight:700;color:var(--navy);box-shadow:none!important;background:#fff}
.accordion-button:not(.collapsed){color:var(--blue);background:var(--soft)}
.accordion-body{font-size:14px;color:var(--muted)}
.cta-band{background:var(--navy);color:#fff;padding:55px 0}
.cta-band h2{font-size:30px;margin:0 0 9px}
.cta-band p{color:#c3d3e3;margin:0}
footer{background:#0d1b30;color:#9db0c5;padding:55px 0 22px}
.footer-title{color:#fff;font-weight:800;margin-bottom:15px}
.footer-link{display:block;color:#9db0c5;font-size:13px;margin:7px 0}
.footer-link:hover{color:#7bd7e7}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:18px;font-size:12px;display:flex;justify-content:space-between;gap:15px}
@media(max-width:991px){.nav-search{display:none}.category-grid{grid-template-columns:repeat(2,1fr)}.page-hero{padding:64px 0}.hero-panel{margin-top:28px}}
@media(max-width:767px){section{padding:58px 0}.section-head{display:block}.section-head .btn-lightline{margin-top:18px}.category-grid,.compare,.topic-list{grid-template-columns:1fr}.page-hero h1{font-size:2.6rem}.page-hero p{font-size:15px}.category-feature img{height:230px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}}
@media(max-width:520px){.navbar{min-height:68px}.brand-name{font-size:14px}.brand-mark{width:34px;height:34px}.page-hero h1{font-size:2.2rem}.hero-panel{padding:22px}.section-head h2{font-size:25px}.btn-main,.btn-lightline{width:100%;justify-content:center}}