/* roulang page: index */
:root{
      --blue:#2563eb;
      --blue-dark:#173b8f;
      --cyan:#16b8c4;
      --ink:#17223b;
      --muted:#6e7890;
      --soft:#f4f7fb;
      --line:#e4e9f2;
      --white:#fff;
      --gold:#f2ae3d;
      --radius:18px;
      --shadow:0 16px 38px rgba(24,48,92,.09);
      --shadow-hover:0 22px 46px rgba(24,48,92,.16);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#fff;font-family:"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}
    button{cursor:pointer}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(228,233,242,.85);backdrop-filter:blur(16px)}
    .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:800;white-space:nowrap}
    .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--blue);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:0 8px 18px rgba(37,99,235,.24)}
    .nav-links{display:flex;align-items:center;gap:8px}
    .nav-links a{padding:9px 14px;border-radius:10px;color:var(--muted);font-size:14px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--blue);background:#eef4ff}
    .nav-search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:11px;padding:5px 7px 5px 12px;background:#fff}
    .nav-search input{width:122px;border:0;outline:0;color:var(--ink);font-size:13px}
    .search-btn{border:0;background:var(--blue);color:#fff;border-radius:8px;padding:6px 10px}
    .mobile-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:9px;padding:8px 11px;color:var(--blue)}
    .hero{position:relative;overflow:hidden;min-height:570px;background:#edf5ff}
    .hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(237,245,255,.98) 0%,rgba(237,245,255,.88) 43%,rgba(237,245,255,.2) 100%),url("https://images.unsplash.com/photo-1485846234645-a62644f84728?auto=format&fit=crop&w=1800&q=85") center/cover}
    .hero-inner{position:relative;min-height:570px;display:flex;align-items:center}
    .hero-copy{max-width:650px;padding:70px 0}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);background:#dceaff;border-radius:999px;padding:5px 12px;font-size:13px;font-weight:700}
    h1{margin:19px 0 14px;font-size:clamp(38px,5vw,66px);line-height:1.18;letter-spacing:0;font-weight:900}
    h1 span{color:var(--blue)}
    .hero-lead{font-size:18px;color:#52617b;max-width:610px;margin:0 0 27px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px}
    .btn{border:0;border-radius:11px;padding:12px 21px;font-weight:700;display:inline-flex;align-items:center;gap:8px;transition:.22s}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 22px rgba(37,99,235,.22)}
    .btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px)}
    .btn-light{background:#fff;color:var(--blue);border:1px solid #d6e1f4}
    .btn-light:hover{border-color:var(--blue);background:#f6f9ff}
    .hero-proof{display:flex;gap:24px;margin-top:35px;color:var(--muted);font-size:13px}
    .hero-proof strong{display:block;color:var(--ink);font-size:21px;line-height:1.2}
    main{overflow:hidden}
    .section{padding:82px 0}
    .section.alt{background:var(--soft)}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:29px}
    .section-kicker{color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em}
    h2{margin:4px 0 8px;font-size:30px;line-height:1.3}
    .section-head p{max-width:650px;margin:0;color:var(--muted);font-size:15px}
    .more{color:var(--blue);font-size:14px;font-weight:700;white-space:nowrap}
    .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .feature{padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:.22s}
    .feature:hover,.video-card:hover,.news-card:hover,.rank-row:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
    .feature-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:13px;background:#e6f5ff;color:var(--blue);font-size:21px;margin-bottom:17px}
    .feature h3{margin:0 0 8px;font-size:18px}
    .feature p{margin:0;color:var(--muted);font-size:14px}
    .video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:19px}
    .video-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 9px 24px rgba(24,48,92,.06);transition:.22s}
    .cover{height:168px;position:relative;overflow:hidden}
    .cover img{height:100%;transition:.35s}
    .video-card:hover .cover img{transform:scale(1.05)}
    .badge{position:absolute;left:11px;top:11px;background:rgba(20,37,71,.82);color:#fff;border-radius:6px;padding:2px 7px;font-size:11px}
    .card-body{padding:14px}
    .card-body h3{font-size:16px;margin:0 0 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .card-meta{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px}
    .rating{color:#d88b12;font-weight:700}
    .split{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:stretch}
    .stage{min-height:310px;border-radius:var(--radius);padding:34px;color:#fff;position:relative;overflow:hidden;background:#173b8f url("https://images.unsplash.com/photo-1500534623283-312aade485b7?auto=format&fit=crop&w=1200&q=80") center/cover}
    .stage:after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(18,51,130,.96),rgba(18,51,130,.45))}
    .stage>*{position:relative;z-index:1}
    .stage h3{font-size:29px;max-width:420px;margin:8px 0 12px}
    .stage p{max-width:470px;color:#d9e5ff;margin:0}
    .date-chip{display:inline-block;color:#bcecff;border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:4px 10px;font-size:12px}
    .timeline{border-left:2px solid #cbdcff;padding-left:22px;display:grid;gap:18px}
    .timeline-item{position:relative;background:#fff;padding:16px 18px;border-radius:12px;border:1px solid var(--line)}
    .timeline-item:before{content:"";position:absolute;left:-30px;top:21px;width:12px;height:12px;border-radius:50%;background:var(--blue);border:3px solid #dbe7ff}
    .timeline-item strong{display:block;margin-bottom:3px}
    .timeline-item span{color:var(--muted);font-size:13px}
    .category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .category{min-height:174px;padding:24px;border-radius:var(--radius);border:1px solid var(--line);background:#fff;transition:.22s}
    .category:hover{border-color:#9abaff;box-shadow:var(--shadow);transform:translateY(-3px)}
    .category h3{margin:0 0 10px;font-size:18px}
    .category p{margin:0;color:var(--muted);font-size:14px}
    .category a{display:inline-block;margin-top:18px;color:var(--blue);font-size:13px;font-weight:700}
    .rank-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .rank-list{display:grid;gap:9px}
    .rank-row{display:grid;grid-template-columns:34px 1fr auto auto;align-items:center;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:#fff;transition:.2s}
    .rank-num{font-size:19px;font-weight:900;color:#a9b3c5}
    .rank-row:nth-child(-n+3) .rank-num{color:var(--blue)}
    .rank-title{font-weight:700;font-size:14px}
    .rank-type{font-size:11px;color:var(--blue);background:#edf4ff;padding:3px 7px;border-radius:5px}
    .heat{color:var(--muted);font-size:12px}
    .news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .news-card{display:grid;grid-template-columns:118px 1fr;gap:15px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:14px;transition:.2s}
    .news-card img{height:93px;border-radius:9px}
    .news-card h3{font-size:15px;line-height:1.45;margin:4px 0 8px}
    .news-card time{font-size:12px;color:var(--muted)}
    .quote-band{background:#eef7ff;padding:34px;border-radius:var(--radius);display:flex;align-items:center;justify-content:space-between;gap:25px}
    .quote-band h2{font-size:25px;margin:0 0 6px}
    .quote-band p{color:var(--muted);margin:0;font-size:14px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:17px 20px}
    summary{cursor:pointer;font-weight:700;list-style:none}
    summary::-webkit-details-marker{display:none}
    details p{color:var(--muted);font-size:14px;margin:12px 0 0}
    .subscribe{background:#172d62;color:#fff;padding:46px 0}
    .subscribe-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .subscribe h2{margin:0 0 7px;color:#fff}
    .subscribe p{margin:0;color:#cbd7f3}
    .subscribe-form{display:flex;gap:8px}
    .subscribe-form input{min-width:220px;border:0;border-radius:9px;padding:12px 14px;outline:0}
    .subscribe-form button{background:#45c4d4;color:#073754;border:0;border-radius:9px;padding:11px 18px;font-weight:800}
    .site-footer{background:#0f1d3c;color:#aebbd5;padding:48px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px;padding-bottom:35px}
    .footer-brand{color:#fff;font-size:18px;font-weight:800;margin-bottom:12px}
    .footer-grid p{font-size:13px;max-width:280px;margin:0}
    .footer-grid h3{font-size:14px;color:#fff;margin:0 0 13px}
    .footer-grid a{display:block;font-size:13px;margin:7px 0;transition:.2s}
    .footer-grid a:hover{color:#fff}
    .copyright{border-top:1px solid rgba(255,255,255,.12);padding-top:19px;font-size:12px;display:flex;justify-content:space-between;gap:15px}
    :focus-visible{outline:3px solid rgba(37,99,235,.35);outline-offset:3px}
    @media(max-width:1024px){
      .video-grid{grid-template-columns:repeat(3,1fr)}
      .category-grid{grid-template-columns:repeat(2,1fr)}
      .news-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(100% - 28px,620px)}
      .nav-wrap{height:68px}
      .mobile-toggle{display:block}
      .nav-links{display:none;position:absolute;top:68px;left:0;right:0;padding:12px 16px;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
      .nav-links.open{display:flex;flex-wrap:wrap}
      .nav-links a{flex:1;text-align:center}
      .nav-search{display:none}
      .hero,.hero-inner{min-height:560px}
      .hero:before{background:linear-gradient(90deg,rgba(237,245,255,.97),rgba(237,245,255,.72)),url("https://images.unsplash.com/photo-1485846234645-a62644f84728?auto=format&fit=crop&w=1200&q=80") center/cover}
      .hero-copy{padding:55px 0}
      .hero-lead{font-size:16px}
      .section{padding:60px 0}
      .feature-grid,.split,.rank-layout{grid-template-columns:1fr}
      .video-grid{grid-template-columns:repeat(2,1fr)}
      .section-head{display:block}
      .section-head p{margin-top:8px}
      .more{display:inline-block;margin-top:14px}
      .subscribe-inner,.quote-band{display:block}
      .subscribe-form{margin-top:20px}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:520px){
      h1{font-size:39px}
      .hero-proof{gap:14px}
      .video-grid,.category-grid,.news-grid,.faq-grid{grid-template-columns:1fr}
      .cover{height:190px}
      .rank-row{grid-template-columns:28px 1fr auto}
      .rank-row .heat{display:none}
      .news-card{grid-template-columns:105px 1fr}
      .news-card img{height:88px}
      .subscribe-form{display:grid}
      .subscribe-form input{min-width:0;width:100%}
      .footer-grid{grid-template-columns:1fr 1fr}
      .copyright{display:block}
      .copyright span{display:block;margin-top:6px}
    }

/* roulang page: category1 */
:root{
 --blue:#2563eb;
 --blue-dark:#173b8f;
 --cyan:#16b8c4;
 --ink:#17223b;
 --muted:#6e7890;
 --soft:#f4f7fb;
 --line:#e4e9f2;
 --white:#fff;
 --gold:#f2ae3d;
 --radius:18px;
 --shadow:0 16px 38px rgba(24,48,92,.09);
 --shadow-hover:0 22px 46px rgba(24,48,92,.16);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#fff;font-family:"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}
button{cursor:pointer}
.container{width:min(1180px,calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(228,233,242,.85);backdrop-filter:blur(16px)}
.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:800;white-space:nowrap}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--blue);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:0 8px 18px rgba(37,99,235,.24)}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-links a{padding:9px 14px;border-radius:10px;color:var(--muted);font-size:14px;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--blue);background:#eef4ff}
.nav-search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:11px;padding:5px 7px 5px 12px;background:#fff}
.nav-search input{width:122px;border:0;outline:0;color:var(--ink);font-size:13px}
.search-btn{border:0;background:var(--blue);color:#fff;border-radius:8px;padding:6px 10px;transition:.2s}
.search-btn:hover{background:var(--blue-dark)}
.mobile-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:9px;padding:8px 11px;color:var(--blue)}
.page-hero{background:#edf5ff;border-bottom:1px solid #e1ebfa;padding:66px 0 58px}
.page-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:54px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);background:#dceaff;border-radius:999px;padding:5px 12px;font-size:13px;font-weight:700}
h1,h2,h3,p{margin-top:0}
.page-hero h1{font-size:clamp(34px,5vw,58px);line-height:1.16;letter-spacing:0;margin:18px 0 15px}
.page-hero h1 em{font-style:normal;color:var(--blue)}
.page-hero-copy{font-size:17px;color:#52617b;max-width:620px;margin-bottom:25px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px;color:var(--muted);font-size:13px}
.hero-points span{background:#fff;border:1px solid #dce7f7;border-radius:10px;padding:8px 12px}
.hero-poster{position:relative;min-height:300px;border-radius:22px;overflow:hidden;box-shadow:var(--shadow);background:url("https://images.unsplash.com/photo-1500534623283-312aade485b7?auto=format&fit=crop&w=1100&q=85") center/cover}
.hero-poster:after{content:"";position:absolute;inset:0;background:linear-gradient(145deg,rgba(23,59,143,.1),rgba(23,59,143,.82))}
.poster-info{position:absolute;z-index:1;left:26px;right:26px;bottom:24px;color:#fff}
.poster-info small{color:#bcecff;font-weight:700}
.poster-info h2{font-size:27px;line-height:1.3;margin:7px 0}
.poster-info p{margin:0;color:#dce8ff;font-size:14px}
.section{padding:76px 0}
.section.alt{background:var(--soft)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-kicker{color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em}
.section-head h2{font-size:30px;line-height:1.3;margin:5px 0 0}
.section-head p{max-width:610px;margin:0;color:var(--muted);font-size:15px}
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}
.topic-card{min-height:206px;padding:23px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:.22s}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.topic-icon{width:43px;height:43px;display:grid;place-items:center;border-radius:13px;background:#e6f5ff;color:var(--blue);font-size:20px;margin-bottom:16px}
.topic-card h3{font-size:18px;margin-bottom:7px}
.topic-card p{font-size:14px;color:var(--muted);margin:0}
.topic-card a{display:inline-block;margin-top:15px;color:var(--blue);font-size:13px;font-weight:700}
.featured-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
.featured-main{position:relative;min-height:390px;overflow:hidden;border-radius:18px;background:url("https://images.unsplash.com/photo-1516321318423-f06f85e504b3?auto=format&fit=crop&w=1200&q=85") center/cover;box-shadow:var(--shadow)}
.featured-main:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(12,28,65,.9),rgba(12,28,65,.08) 70%)}
.featured-text{position:absolute;z-index:1;left:29px;right:29px;bottom:27px;color:#fff}
.featured-text h3{font-size:28px;line-height:1.3;margin:8px 0}
.featured-text p{font-size:14px;color:#dce8ff;margin:0;max-width:560px}
.featured-list{display:grid;gap:13px}
.featured-item{display:grid;grid-template-columns:112px 1fr;gap:15px;padding:11px;background:#fff;border:1px solid var(--line);border-radius:14px;transition:.2s}
.featured-item:hover{border-color:#b9cdf2;box-shadow:var(--shadow)}
.featured-item img{height:100px;border-radius:9px}
.featured-item h3{font-size:16px;line-height:1.4;margin:5px 0}
.featured-item p{font-size:13px;color:var(--muted);margin:0}
.tag{display:inline-flex;padding:3px 8px;border-radius:6px;background:#eaf2ff;color:var(--blue);font-size:11px;font-weight:700}
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.video-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 9px 24px rgba(24,48,92,.06);transition:.22s}
.video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.cover{height:175px;position:relative;overflow:hidden}
.cover img{height:100%;transition:.35s}
.video-card:hover .cover img{transform:scale(1.05)}
.badge{position:absolute;left:11px;top:11px;background:rgba(20,37,71,.82);color:#fff;border-radius:6px;padding:2px 7px;font-size:11px}
.card-body{padding:14px}
.card-body h3{font-size:16px;margin:0 0 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-meta{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px}
.score{color:#d88612;font-weight:800}
.rank-layout{display:grid;grid-template-columns:1fr .86fr;gap:28px;align-items:start}
.rank-list{display:grid;gap:9px}
.rank-row{display:grid;grid-template-columns:34px 1fr auto auto;align-items:center;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:#fff;transition:.2s}
.rank-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.rank-num{font-size:18px;font-weight:900;color:#a7b1c2}
.rank-row:nth-child(-n+3) .rank-num{color:var(--blue)}
.rank-title{font-weight:700;font-size:14px}
.rank-hot{font-size:12px;color:var(--muted)}
.rank-score{color:#d88612;font-size:13px;font-weight:800}
.quote-panel{padding:32px;border-radius:18px;background:#173b8f;color:#fff;min-height:310px;box-shadow:var(--shadow)}
.quote-panel .tag{background:rgba(255,255,255,.14);color:#c9ecff}
.quote-panel h3{font-size:25px;line-height:1.35;margin:18px 0 13px}
.quote-panel p{color:#dbe7ff;font-size:14px;margin-bottom:24px}
.quote-line{height:1px;background:rgba(255,255,255,.2);margin:20px 0}
.quote-data{display:flex;gap:30px}
.quote-data strong{display:block;font-size:22px}
.quote-data span{font-size:12px;color:#b9d2f7}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
.news-card{display:grid;grid-template-columns:118px 1fr;gap:15px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:14px;transition:.2s}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.news-card img{height:100px;border-radius:9px}
.news-card h3{font-size:15px;line-height:1.45;margin:4px 0 8px}
.news-card time{font-size:12px;color:var(--muted)}
.faq-wrap{max-width:850px;margin:auto}
.faq-item{border-bottom:1px solid var(--line);padding:20px 0}
.faq-item summary{cursor:pointer;list-style:none;font-size:17px;font-weight:700;padding-right:30px;position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";position:absolute;right:3px;top:-2px;color:var(--blue);font-size:24px;font-weight:400}
.faq-item[open] summary:after{content:"−"}
.faq-item p{color:var(--muted);font-size:14px;margin:12px 32px 0 0}
.subscribe{padding:34px 40px;border:1px solid #cfe0fb;border-radius:18px;background:#f1f7ff;display:flex;align-items:center;justify-content:space-between;gap:25px}
.subscribe h2{font-size:25px;margin:0 0 6px}
.subscribe p{color:var(--muted);margin:0;font-size:14px}
.subscribe-form{display:flex;gap:9px;flex-shrink:0}
.subscribe-form input{width:220px;border:1px solid #cedbee;border-radius:10px;padding:11px 13px;outline:0;background:#fff}
.subscribe-form input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.btn{border:0;border-radius:11px;padding:12px 21px;font-weight:700;display:inline-flex;align-items:center;gap:8px;transition:.22s}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 22px rgba(37,99,235,.22)}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--blue);border:1px solid #d6e1f4}
.site-footer{background:#10234d;color:#dce7fb;padding:53px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:32px}
.footer-brand{color:#fff;font-size:20px;font-weight:800;margin-bottom:11px}
.site-footer p{font-size:13px;color:#aebfdf;max-width:280px;margin:0}
.site-footer h3{color:#fff;font-size:14px;margin:2px 0 13px}
.site-footer a{display:block;color:#aebfdf;font-size:13px;margin:8px 0;transition:.2s}
.site-footer a:hover{color:#fff}
.copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.13);padding-top:18px;margin-top:35px;color:#91a6ca;font-size:12px}
@media(max-width:1024px){
 .page-hero-grid,.featured-layout,.rank-layout{gap:25px}
 .topic-grid{grid-template-columns:repeat(2,1fr)}
 .video-grid{grid-template-columns:repeat(3,1fr)}
 .footer-grid{grid-template-columns:1.4fr repeat(3,1fr);gap:20px}
}
@media(max-width:768px){
 .container{width:min(100% - 30px,620px)}
 .nav-wrap{height:68px}
 .nav-search{display:none}
 .mobile-toggle{display:block}
 .nav-links{position:absolute;display:none;left:15px;right:15px;top:73px;padding:9px;background:#fff;border:1px solid var(--line);border-radius:13px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
 .nav-links.open{display:flex}
 .nav-links a{padding:11px 13px}
 .page-hero{padding:48px 0}
 .page-hero-grid{grid-template-columns:1fr}
 .hero-poster{min-height:260px}
 .section{padding:58px 0}
 .section-head{display:block}
 .section-head p{margin-top:10px}
 .video-grid{grid-template-columns:repeat(2,1fr)}
 .news-grid{grid-template-columns:1fr 1fr}
 .subscribe{display:block;padding:27px}
 .subscribe-form{margin-top:20px}
}
@media(max-width:520px){
 .container{width:calc(100% - 28px)}
 .brand{font-size:16px}
 .brand-mark{width:34px;height:34px}
 .page-hero h1{font-size:35px}
 .topic-grid,.video-grid,.news-grid{grid-template-columns:1fr}
 .featured-layout{grid-template-columns:1fr}
 .featured-main{min-height:300px}
 .featured-item{grid-template-columns:96px 1fr}
 .featured-item img{height:88px}
 .rank-row{grid-template-columns:27px 1fr auto;gap:8px;padding:12px 10px}
 .rank-hot{display:none}
 .quote-panel{min-height:auto}
 .subscribe-form{display:block}
 .subscribe-form input{width:100%;margin-bottom:10px}
 .subscribe-form .btn{width:100%;justify-content:center}
 .footer-grid{grid-template-columns:1fr 1fr;gap:25px}
 .footer-grid>div:first-child{grid-column:1/-1}
 .copyright{display:block;line-height:2}
}

/* roulang page: category2 */
:root{
 --blue:#2563eb;
 --blue-dark:#173b8f;
 --cyan:#16b8c4;
 --ink:#17223b;
 --muted:#6e7890;
 --soft:#f4f7fb;
 --line:#e4e9f2;
 --white:#fff;
 --gold:#f2ae3d;
 --radius:18px;
 --shadow:0 16px 38px rgba(24,48,92,.09);
 --shadow-hover:0 22px 46px rgba(24,48,92,.16);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#fff;font-family:"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}
button{cursor:pointer}
.container{width:min(1180px,calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(228,233,242,.85);backdrop-filter:blur(16px)}
.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:800;white-space:nowrap}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--blue);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:0 8px 18px rgba(37,99,235,.24)}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-links a{padding:9px 14px;border-radius:10px;color:var(--muted);font-size:14px;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--blue);background:#eef4ff}
.nav-search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:11px;padding:5px 7px 5px 12px;background:#fff}
.nav-search input{width:122px;border:0;outline:0;color:var(--ink);font-size:13px}
.search-btn{border:0;background:var(--blue);color:#fff;border-radius:8px;padding:6px 10px}
.mobile-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:9px;padding:8px 11px;color:var(--blue)}
.hero{position:relative;overflow:hidden;background:#edf5ff;padding:78px 0 74px}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(237,245,255,.98) 0%,rgba(237,245,255,.92) 43%,rgba(237,245,255,.3) 100%),url("https://images.unsplash.com/photo-1492619375914-88005aa9e8fb?auto=format&fit=crop&w=1800&q=85") center/cover}
.hero-inner{position:relative;display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:60px}
.hero-copy{max-width:650px}
.eyebrow,.section-kicker{color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow{display:inline-flex;align-items:center;gap:7px;background:#dceaff;border-radius:999px;padding:5px 12px;letter-spacing:0}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(38px,5vw,64px);line-height:1.12;letter-spacing:0;margin:18px 0 19px}
h1 em{font-style:normal;color:var(--blue)}
.hero-lead{font-size:18px;color:#52617b;max-width:610px;margin-bottom:27px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{border:0;border-radius:11px;padding:12px 21px;font-weight:700;display:inline-flex;align-items:center;gap:8px;transition:.22s}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 22px rgba(37,99,235,.22)}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--blue);border:1px solid #d6e1f4}
.btn-light:hover{border-color:var(--blue);background:#f6f9ff}
.hero-proof{display:flex;gap:24px;margin-top:35px;color:var(--muted);font-size:13px}
.hero-proof strong{display:block;color:var(--ink);font-size:21px;line-height:1.2}
.compare-panel{background:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.8);border-radius:22px;padding:22px;box-shadow:var(--shadow)}
.compare-panel h2{font-size:19px;margin:0 0 16px}
.compare-list{display:grid;gap:10px}
.compare-item{display:grid;grid-template-columns:34px 1fr auto;align-items:center;gap:12px;padding:14px;border:1px solid var(--line);border-radius:13px;background:#fff}
.compare-item.recommend{border:2px solid var(--blue);box-shadow:0 10px 25px rgba(37,99,235,.12)}
.compare-icon{width:30px;height:30px;border-radius:9px;background:#e8f1ff;color:var(--blue);display:grid;place-items:center;font-weight:800}
.compare-item strong{font-size:14px;display:block}
.compare-item small{color:var(--muted);font-size:12px}
.compare-tag{color:var(--blue);font-size:11px;font-weight:800;background:#e8f1ff;border-radius:999px;padding:4px 8px}
.section{padding:78px 0}
.section.alt{background:var(--soft)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:29px}
.section-head h2{font-size:30px;line-height:1.25;margin:7px 0 0}
.section-head p{max-width:650px;margin:0;color:var(--muted);font-size:15px}
.category-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:stretch}
.category-feature{min-height:350px;border-radius:var(--radius);padding:34px;color:#fff;position:relative;overflow:hidden;background:#173b8f url("https://images.unsplash.com/photo-1516321318423-f06f85e504b3?auto=format&fit=crop&w=1200&q=80") center/cover}
.category-feature:after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(18,51,130,.96),rgba(18,51,130,.35))}
.category-feature>*{position:relative;z-index:1}
.category-feature h3{font-size:30px;max-width:400px;margin:10px 0 12px}
.category-feature p{max-width:430px;color:#d9e5ff}
.category-feature .btn{margin-top:18px}
.category-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.category{padding:21px;background:#fff;border:1px solid var(--line);border-radius:14px;transition:.2s}
.category:hover,.video-card:hover,.news-card:hover,.rank-row:hover,.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.category h3{margin:0 0 7px;font-size:17px}
.category p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}
.category a{display:inline-block;margin-top:13px;color:var(--blue);font-size:13px;font-weight:700}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature{padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:.22s}
.feature-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:13px;background:#e6f5ff;color:var(--blue);font-size:20px;margin-bottom:17px}
.feature h3{margin:0 0 8px;font-size:18px}
.feature p{margin:0;color:var(--muted);font-size:14px}
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:19px}
.video-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 9px 24px rgba(24,48,92,.06);transition:.22s}
.cover{height:175px;position:relative;overflow:hidden}
.cover img{height:100%;transition:.35s}
.video-card:hover .cover img{transform:scale(1.05)}
.badge{position:absolute;left:11px;top:11px;background:rgba(20,37,71,.82);color:#fff;border-radius:6px;padding:2px 7px;font-size:11px}
.card-body{padding:14px}
.card-body h3{font-size:16px;margin:0 0 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-meta{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px}
.rating{color:#d58a13;font-weight:800}
.split-section{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start}
.split-copy h2{font-size:31px;line-height:1.3;margin:8px 0 14px}
.split-copy p{color:var(--muted);font-size:15px}
.signal-list{display:grid;gap:12px;margin-top:25px}
.signal{display:flex;gap:13px;align-items:flex-start}
.signal-mark{width:27px;height:27px;border-radius:50%;display:grid;place-items:center;background:#e6f5ff;color:var(--blue);font-weight:800;flex:0 0 auto}
.signal strong{display:block;font-size:15px}
.signal span{display:block;color:var(--muted);font-size:13px}
.rank-list{display:grid;gap:9px}
.rank-row{display:grid;grid-template-columns:34px 1fr auto auto;align-items:center;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:#fff;transition:.2s}
.rank-row:nth-child(-n+3) .rank-num{color:var(--blue)}
.rank-num{font-weight:900;color:#9aa6b9}
.rank-title{font-weight:700;font-size:14px}
.rank-type{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:3px 9px}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.news-card{display:grid;grid-template-columns:112px 1fr;gap:15px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:14px;transition:.2s}
.news-card img{height:82px;border-radius:9px}
.news-card h3{font-size:15px;line-height:1.45;margin:2px 0 8px}
.news-card time{font-size:12px;color:var(--muted)}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px}
.faq-item h3{font-size:16px;margin:0 0 8px}
.faq-item p{font-size:14px;color:var(--muted);margin:0}
.cta-band{padding:58px 0;background:#edf5ff}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
.cta-inner h2{font-size:29px;margin:0 0 8px}
.cta-inner p{margin:0;color:var(--muted)}
.site-footer{background:#132344;color:#dbe6ff;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:35px}
.footer-brand{color:#fff;font-size:20px;font-weight:800;margin-bottom:10px}
.footer-grid p{color:#9fb0d0;font-size:13px;max-width:280px}
.footer-grid h3{font-size:14px;color:#fff;margin:0 0 14px}
.footer-grid a{display:block;color:#9fb0d0;font-size:13px;margin:8px 0;transition:.2s}
.footer-grid a:hover{color:#fff}
.copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(219,230,255,.16);margin-top:35px;padding-top:19px;color:#8ea0c2;font-size:12px}
:focus-visible{outline:3px solid rgba(37,99,235,.35);outline-offset:3px}
@media(max-width:1024px){
 .nav-search{display:none}
 .hero-inner{gap:30px}
 .video-grid{grid-template-columns:repeat(3,1fr)}
 .footer-grid{grid-template-columns:1.3fr repeat(3,1fr);gap:22px}
}
@media(max-width:768px){
 .container{width:min(100% - 30px,620px)}
 .nav-wrap{height:68px}
 .brand{font-size:16px}
 .brand-mark{width:34px;height:34px}
 .mobile-toggle{display:block}
 .nav-links{display:none;position:absolute;left:15px;right:15px;top:62px;padding:9px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:13px;flex-direction:column;align-items:stretch}
 .nav-links.open{display:flex}
 .nav-links a{padding:11px 13px}
 .hero{padding:60px 0}
 .hero-inner,.category-layout,.split-section{grid-template-columns:1fr}
 .hero-copy{padding:0}
 .hero-copy h1{font-size:43px}
 .compare-panel{margin-top:5px}
 .section{padding:60px 0}
 .section-head{display:block}
 .section-head p{margin-top:12px}
 .feature-grid{grid-template-columns:1fr}
 .video-grid{grid-template-columns:repeat(2,1fr)}
 .news-grid{grid-template-columns:1fr}
 .cta-inner{display:block}
 .cta-inner .btn{margin-top:20px}
 .footer-grid{grid-template-columns:repeat(2,1fr)}
 .footer-grid>div:first-child{grid-column:1/-1}
}
@media(max-width:520px){
 .container{width:calc(100% - 26px)}
 .brand{font-size:15px}
 .brand-mark{width:32px;height:32px;border-radius:10px}
 h1{font-size:36px!important}
 .hero-lead{font-size:16px}
 .hero-proof{gap:15px;flex-wrap:wrap}
 .category-grid,.video-grid,.faq-grid{grid-template-columns:1fr}
 .cover{height:210px}
 .rank-row{grid-template-columns:27px 1fr auto;gap:8px}
 .rank-row .rating{display:none}
 .rank-type{font-size:11px;padding:2px 7px}
 .news-card{grid-template-columns:96px 1fr}
 .news-card img{height:76px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:20px}
 .copyright{display:block}
 .copyright span{display:block;margin-top:5px}
}