/* roulang page: index */
:root{
      --ink:#17202a;
      --muted:#68727d;
      --paper:#f7f8fa;
      --white:#fff;
      --line:#e6e9ed;
      --accent:#e4572e;
      --accent-dark:#b93d1e;
      --teal:#146c70;
      --soft:#fff0e9;
      --radius:16px;
      --shadow:0 14px 38px rgba(23,32,42,.08);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{display:block;width:100%;object-fit:cover}
    button,input{font:inherit}
    .container{max-width:1180px}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
    .navbar{min-height:76px}
    .brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:0}
    .brand-mark{width:38px;height:38px;border-radius:11px;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:16px;box-shadow:0 7px 16px rgba(228,87,46,.24)}
    .brand-name{font-size:16px;max-width:210px;line-height:1.25}
    .nav-link{color:#5f6872!important;font-size:14px;font-weight:650;padding:9px 13px!important;border-radius:10px;transition:.2s}
    .nav-link:hover,.nav-link.active{color:var(--accent)!important;background:var(--soft)}
    .nav-search{border:1px solid var(--line);border-radius:10px;padding:8px 12px;width:160px;color:var(--muted);background:#fff}
    .nav-search:focus{outline:3px solid rgba(228,87,46,.16);border-color:var(--accent)}
    .hero{padding:58px 0 45px;background:#fff;border-bottom:1px solid var(--line)}
    .hero-kicker,.eyebrow{color:var(--accent);font-weight:800;font-size:13px;letter-spacing:.08em}
    h1{font-size:clamp(32px,4vw,56px);line-height:1.16;letter-spacing:0;margin:12px 0 20px;font-weight:900;max-width:760px}
    h1 span{color:var(--accent)}
    .hero-copy{font-size:17px;color:var(--muted);max-width:760px;margin-bottom:24px}
    .btn-main{background:var(--accent);border:1px solid var(--accent);color:#fff;border-radius:10px;padding:11px 20px;font-weight:750;transition:.2s}
    .btn-main:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;transform:translateY(-2px)}
    .btn-quiet{background:#fff;border:1px solid var(--line);color:var(--ink);border-radius:10px;padding:11px 20px;font-weight:750;transition:.2s}
    .btn-quiet:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
    .trust-row{display:flex;gap:22px;flex-wrap:wrap;margin-top:27px;color:var(--muted);font-size:13px}
    .trust-row strong{display:block;color:var(--ink);font-size:18px;line-height:1.2}
    .hero-panel{background:var(--ink);color:#fff;border-radius:20px;padding:24px;min-height:260px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .hero-panel:after{content:"";position:absolute;right:-45px;bottom:-65px;width:180px;height:180px;border:30px solid rgba(228,87,46,.48);border-radius:50%}
    .panel-label{color:#ffae91;font-size:12px;font-weight:800;letter-spacing:.08em}
    .hero-panel h2{font-size:26px;margin:18px 0 12px;max-width:280px}
    .panel-meta{border-top:1px solid rgba(255,255,255,.16);padding-top:15px;color:#c4cbd0;font-size:13px}
    section{padding:68px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:27px}
    .section-head h2{font-size:29px;line-height:1.25;margin:5px 0 0;font-weight:850}
    .section-head p{max-width:570px;color:var(--muted);margin:0;font-size:14px}
    .section-link{color:var(--accent);font-size:14px;font-weight:750;white-space:nowrap}
    .section-link:hover{text-decoration:underline}
    .feature-band{background:#f0f5f4}
    .feature-card{height:100%;background:#fff;border:1px solid #e2e9e7;border-radius:var(--radius);padding:23px;transition:.22s}
    .feature-card:hover,.content-card:hover,.news-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .feature-icon{width:42px;height:42px;border-radius:12px;background:#e5f3f0;color:var(--teal);display:grid;place-items:center;font-weight:900;margin-bottom:17px}
    .feature-card h3{font-size:18px;margin:0 0 9px}
    .feature-card p,.topic-card p,.news-item p{color:var(--muted);font-size:14px;margin:0}
    .content-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;height:100%;transition:.22s}
    .cover{height:170px;position:relative}
    .cover img{height:100%;filter:saturate(.9)}
    .cover:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(0,0,0,.5))}
    .badge-status{position:absolute;z-index:1;top:12px;left:12px;background:var(--accent);color:#fff;border-radius:6px;padding:3px 8px;font-size:11px;font-weight:800}
    .card-body{padding:17px}
    .card-title{font-weight:800;font-size:16px;margin-bottom:8px}
    .score{color:var(--accent);font-weight:800;font-size:13px}
    .card-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}
    .topic-card{padding:23px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;min-height:160px;transition:.2s}
    .topic-card:hover{border-color:var(--accent);transform:translateY(-3px)}
    .topic-card h3{font-size:19px;margin:0 0 9px}
    .topic-number{color:var(--accent);font-weight:900;margin-bottom:12px}
    .rank-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .rank-item{display:grid;grid-template-columns:42px 1fr 90px 70px 72px;align-items:center;gap:12px;padding:15px 20px;border-bottom:1px solid var(--line);font-size:14px}
    .rank-item:last-child{border-bottom:0}
    .rank-no{font-size:20px;font-weight:900;color:#b5bdc3}
    .rank-item:nth-child(-n+3) .rank-no{color:var(--accent)}
    .rank-name{font-weight:750}
    .rank-tag{font-size:11px;color:var(--teal);background:#e6f3f1;border-radius:5px;padding:3px 7px;text-align:center}
    .heat{color:var(--muted);font-size:12px}
    .news-item{display:flex;gap:15px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px;transition:.2s}
    .news-thumb{width:104px;height:78px;border-radius:10px;flex:none}
    .news-item h3{font-size:15px;line-height:1.4;margin:1px 0 7px}
    .news-date{color:var(--accent);font-size:12px;font-weight:700}
    .proof{background:var(--ink);color:#fff}
    .proof .section-head p{color:#b7c0c6}
    .proof-stat{border-left:2px solid var(--accent);padding-left:17px}
    .proof-stat strong{font-size:31px;display:block;line-height:1.2}
    .proof-stat span{color:#b7c0c6;font-size:13px}
    .faq-wrap{max-width:860px}
    .accordion-item{border:1px solid var(--line)!important;margin-bottom:10px;border-radius:12px!important;overflow:hidden}
    .accordion-button{font-weight:750;color:var(--ink);background:#fff;box-shadow:none!important}
    .accordion-button:not(.collapsed){background:var(--soft);color:var(--accent)}
    .accordion-body{color:var(--muted);font-size:14px;background:#fff}
    .closing{padding:50px 0;background:var(--soft)}
    .closing-box{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .closing h2{font-size:30px;margin:0 0 8px}
    .closing p{margin:0;color:var(--muted)}
    footer{background:#151b22;color:#c6cdd2;padding:52px 0 25px}
    footer .brand-name{color:#fff}
    .footer-title{color:#fff;font-weight:800;margin-bottom:14px}
    .footer-links{list-style:none;padding:0;margin:0}
    .footer-links li{margin:7px 0;font-size:13px}
    .footer-links a:hover{color:#ffad92}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:18px;font-size:12px;color:#8f9aa1}
    .footer-bottom a{color:#ffad92}
    @media(max-width:991px){
      .nav-search{display:none}
      .hero-panel{margin-top:28px}
      .section-head{align-items:start;flex-direction:column}
    }
    @media(max-width:767px){
      .navbar{min-height:68px}
      .brand-name{font-size:14px;max-width:180px}
      .hero{padding:42px 0 35px}
      h1{font-size:35px}
      .hero-copy{font-size:15px}
      section{padding:48px 0}
      .cover{height:190px}
      .rank-item{grid-template-columns:30px 1fr 60px}
      .rank-item .heat,.rank-item .rank-tag{display:none}
      .closing-box{align-items:flex-start;flex-direction:column}
    }
    @media(max-width:520px){
      .hero .btn-main,.hero .btn-quiet{width:100%;margin-bottom:8px}
      .trust-row{gap:14px}
      .news-thumb{width:86px;height:70px}
      .news-item h3{font-size:14px}
      .section-head h2{font-size:25px}
    }

/* roulang page: category1 */
:root{--ink:#17202a;--muted:#68727d;--paper:#f7f8fa;--white:#fff;--line:#e6e9ed;--accent:#e4572e;--accent-dark:#b93d1e;--teal:#146c70;--soft:#fff0e9;--radius:16px;--shadow:0 14px 38px rgba(23,32,42,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}a{color:inherit;text-decoration:none}img{display:block;width:100%;object-fit:cover}button,input{font:inherit}.container{max-width:1180px}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.navbar{min-height:76px}.brand{display:flex;align-items:center;gap:11px;font-weight:800}.brand-mark{width:38px;height:38px;border-radius:11px;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:16px;box-shadow:0 7px 16px rgba(228,87,46,.24)}.brand-name{font-size:16px;max-width:210px;line-height:1.25}.nav-link{color:#5f6872!important;font-size:14px;font-weight:650;padding:9px 13px!important;border-radius:10px;transition:.2s}.nav-link:hover,.nav-link.active{color:var(--accent)!important;background:var(--soft)}.nav-search{border:1px solid var(--line);border-radius:10px;padding:8px 12px;width:160px;color:var(--muted);background:#fff}.nav-search:focus{outline:3px solid rgba(228,87,46,.16);border-color:var(--accent)}.hero{padding:62px 0 48px;background:#fff;border-bottom:1px solid var(--line)}.hero-kicker,.eyebrow{color:var(--accent);font-weight:800;font-size:13px;letter-spacing:.08em}.hero h1{font-size:clamp(32px,5vw,58px);line-height:1.15;font-weight:900;margin:13px 0 17px;max-width:760px}.hero h1 span{color:var(--accent)}.hero-copy{font-size:17px;color:var(--muted);max-width:730px;margin-bottom:25px}.btn-main,.btn-quiet{display:inline-block;border-radius:10px;padding:11px 20px;font-weight:750;transition:.2s}.btn-main{background:var(--accent);border:1px solid var(--accent);color:#fff}.btn-main:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px)}.btn-quiet{background:#fff;border:1px solid var(--line);color:var(--ink)}.btn-quiet:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}.hero-panel{background:var(--ink);color:#fff;border-radius:20px;padding:25px;min-height:280px;box-shadow:var(--shadow);position:relative;overflow:hidden}.hero-panel:after{content:"";position:absolute;right:-45px;bottom:-65px;width:180px;height:180px;border:30px solid rgba(228,87,46,.48);border-radius:50%}.hero-panel h2{font-size:26px;margin:18px 0 12px;max-width:280px}.check-list{padding:0;margin:22px 0 0;list-style:none;position:relative;z-index:1}.check-list li{margin:10px 0;color:#d6dde0;font-size:14px}.check-list li:before{content:"✓";color:#ffad92;font-weight:900;margin-right:9px}.panel-meta{border-top:1px solid rgba(255,255,255,.16);padding-top:15px;color:#c4cbd0;font-size:13px;position:relative;z-index:1}section{padding:68px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:27px}.section-head h2{font-size:29px;line-height:1.25;margin:5px 0 0;font-weight:850}.section-head p{max-width:570px;color:var(--muted);margin:0;font-size:14px}.section-link{color:var(--accent);font-size:14px;font-weight:750;white-space:nowrap}.section-link:hover{text-decoration:underline}.feature-band{background:#f0f5f4}.feature-card{height:100%;background:#fff;border:1px solid #e2e9e7;border-radius:var(--radius);padding:23px;transition:.22s}.feature-card:hover,.content-card:hover,.news-item:hover,.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.feature-icon{width:42px;height:42px;border-radius:12px;background:#e5f3f0;color:var(--teal);display:grid;place-items:center;font-weight:900;margin-bottom:17px}.feature-card h3,.topic-card h3{font-size:18px;margin:0 0 9px}.feature-card p,.topic-card p,.news-item p{color:var(--muted);font-size:14px;margin:0}.content-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;height:100%;transition:.22s}.cover{height:160px;position:relative;background:#dfe7e6}.cover img{height:100%;filter:saturate(.9)}.badge-status{position:absolute;z-index:1;top:12px;left:12px;background:var(--accent);color:#fff;border-radius:6px;padding:3px 8px;font-size:11px;font-weight:800}.card-body{padding:17px}.card-title{font-weight:800;font-size:16px;margin-bottom:8px}.card-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}.topic-card{padding:23px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;min-height:160px;transition:.2s}.topic-card h3{font-size:19px}.topic-number{color:var(--accent);font-size:13px;font-weight:900;margin-bottom:12px}.rank-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.rank-item{display:grid;grid-template-columns:42px 1fr 90px 70px 72px;align-items:center;gap:12px;padding:15px 20px;border-bottom:1px solid var(--line);font-size:14px}.rank-item:last-child{border-bottom:0}.rank-item:nth-child(-n+3) .rank-no{color:var(--accent)}.rank-tag{font-size:11px;color:var(--teal);background:#e6f3f1;border-radius:5px;padding:3px 7px;text-align:center}.news-item{display:flex;gap:15px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px;transition:.2s}.news-thumb{width:105px;height:78px;flex:0 0 105px;border-radius:9px;overflow:hidden}.news-item h3{font-size:15px;line-height:1.4;margin:1px 0 7px}.proof{background:var(--ink);color:#fff}.proof .section-head p{color:#b7c0c6}.proof-stat{border-left:2px solid var(--accent);padding-left:18px}.proof-stat strong{display:block;font-size:31px;color:#fff;line-height:1.2}.proof-stat span{font-size:13px;color:#b7c0c6}.faq-wrap{max-width:860px}.accordion-item{border:1px solid var(--line)!important;margin-bottom:10px;border-radius:12px!important;overflow:hidden}.accordion-button{font-weight:750;color:var(--ink);background:#fff;box-shadow:none!important}.accordion-button:not(.collapsed){background:var(--soft);color:var(--accent)}.accordion-body{color:var(--muted);font-size:14px;background:#fff}.cta-band{background:var(--soft);border-top:1px solid #f4d8cc;border-bottom:1px solid #f4d8cc}.cta-band h2{font-size:30px;font-weight:850;margin:0 0 10px}.cta-band p{color:var(--muted);margin:0}.cta-side{text-align:right}footer{background:#151b22;color:#c6cdd2;padding:52px 0 25px}footer .brand-name{color:#fff}.footer-title{color:#fff;font-weight:800;margin-bottom:14px}.footer-links{list-style:none;padding:0;margin:0}.footer-links li{margin:7px 0;font-size:13px}.footer-links a:hover{color:#ffad92}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:18px;font-size:12px;color:#8f9aa1}.nav-search{display:none}@media(min-width:992px){.nav-search{display:block}}@media(max-width:991px){.brand-name{font-size:14px;max-width:180px}.hero{padding:45px 0 36px}.hero-panel{margin-top:28px}.section-head{align-items:start;flex-direction:column}.cta-side{text-align:left;margin-top:20px}}@media(max-width:767px){section{padding:48px 0}.hero h1{font-size:36px}.hero-copy{font-size:15px}.hero .btn-main,.hero .btn-quiet{width:100%;margin-bottom:8px}.rank-item{grid-template-columns:30px 1fr 60px}.rank-item .heat,.rank-item .rank-tag{display:none}.news-thumb{width:86px;flex-basis:86px;height:70px}}@media(max-width:520px){.navbar{min-height:68px}.section-head h2{font-size:25px}.brand-mark{width:34px;height:34px}.rank-item{padding:13px 12px;gap:8px;font-size:13px}.news-item{gap:10px}.news-item h3{font-size:14px}}