/* roulang page: index */
:root{
      --ink:#171923;
      --muted:#697080;
      --soft:#969daa;
      --paper:#f7f8fa;
      --white:#ffffff;
      --line:#e6e8ed;
      --accent:#e5485d;
      --accent-dark:#b92d42;
      --gold:#e3aa55;
      --navy:#171b2d;
      --navy-2:#222842;
      --green:#39a77d;
      --radius:18px;
      --shadow:0 16px 40px rgba(25,31,51,.09);
      --shadow-hover:0 22px 50px rgba(25,31,51,.16);
      --max:1200px;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:var(--paper);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      line-height:1.75;
      font-size:15px;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;width:100%;object-fit:cover}
    button,input{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(229,72,93,.3);outline-offset:3px}
    .container{width:min(calc(100% - 40px),var(--max));margin:0 auto}
    .topline{height:4px;background:var(--accent)}
    .site-header{
      position:sticky;top:0;z-index:20;
      background:rgba(255,255,255,.94);
      backdrop-filter:blur(15px);
      border-bottom:1px solid rgba(230,232,237,.9);
    }
    .nav-wrap{height:76px;display:flex;align-items:center;gap:30px}
    .brand{display:flex;align-items:center;gap:11px;min-width:max-content}
    .brand-mark{
      width:38px;height:38px;border-radius:11px;background:var(--accent);
      display:grid;place-items:center;color:#fff;font-size:18px;font-weight:800;
      box-shadow:0 8px 18px rgba(229,72,93,.25)
    }
    .brand-name{font-weight:800;letter-spacing:.2px;font-size:17px}
    .brand-name span{color:var(--accent)}
    .main-nav{display:flex;align-items:center;gap:7px;margin-left:auto}
    .main-nav a{
      padding:8px 13px;border-radius:10px;color:var(--muted);
      transition:background .2s,color .2s
    }
    .main-nav a:hover,.main-nav a.active{background:#fff0f2;color:var(--accent)}
    .nav-action{
      border:1px solid var(--line);background:#fff;color:var(--ink);
      border-radius:10px;padding:9px 15px;transition:.2s
    }
    .nav-action:hover{border-color:var(--accent);color:var(--accent)}
    .menu-toggle{display:none;border:0;background:transparent;font-size:25px;color:var(--ink)}
    .hero{padding:60px 0 54px;background:#fff}
    .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center}
    .eyebrow{display:flex;align-items:center;gap:10px;color:var(--accent);font-size:13px;font-weight:800;letter-spacing:1.5px}
    .eyebrow::before{content:"";width:30px;height:2px;background:var(--accent)}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(34px,5vw,66px);line-height:1.13;letter-spacing:-1px;margin:18px 0 20px;font-weight:900}
    h1 em{font-style:normal;color:var(--accent);position:relative}
    h1 em::after{content:"";position:absolute;left:3px;right:3px;bottom:-5px;height:7px;background:#ffd9de;z-index:-1;transform:skew(-15deg)}
    .hero-copy{font-size:17px;color:var(--muted);max-width:670px;margin-bottom:27px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:46px;padding:0 19px;border-radius:11px;border:1px solid transparent;
      font-weight:750;transition:transform .2s,box-shadow .2s,background .2s
    }
    .btn:hover{transform:translateY(-2px)}
    .btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(229,72,93,.2)}
    .btn-primary:hover{background:var(--accent-dark);box-shadow:0 14px 26px rgba(229,72,93,.28)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--ink)}
    .btn-secondary:hover{border-color:var(--accent);color:var(--accent)}
    .hero-feature{position:relative;min-height:390px;border-radius:24px;overflow:hidden;background:var(--navy);box-shadow:var(--shadow)}
    .hero-feature img{height:390px;opacity:.78}
    .hero-feature::after{content:"";position:absolute;inset:35% 0 0;background:linear-gradient(transparent,rgba(16,18,31,.92))}
    .feature-info{position:absolute;z-index:1;bottom:22px;left:24px;right:24px;color:#fff}
    .feature-info h2{font-size:25px;line-height:1.3;margin:10px 0 5px}
    .feature-info p{font-size:13px;color:#d6d8e2;margin:0}
    .feature-meta{display:flex;gap:8px;flex-wrap:wrap}
    .tag,.quality{
      display:inline-flex;align-items:center;border-radius:6px;padding:2px 8px;
      font-size:11px;font-weight:800;letter-spacing:.3px
    }
    .tag{background:#f5e8d2;color:#91621d}
    .tag-red{background:#ffe3e7;color:var(--accent)}
    .tag-dark{background:rgba(255,255,255,.18);color:#fff}
    .quality{background:#e4f7ee;color:#21795a}
    .section{padding:76px 0}
    .section-muted{background:#f0f2f5}
    .section-dark{background:var(--navy);color:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
    .section-kicker{color:var(--accent);font-size:12px;font-weight:850;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:7px}
    .section-head h2{font-size:32px;line-height:1.25;margin:0;font-weight:850}
    .section-head p{color:var(--muted);max-width:580px;margin:0}
    .section-dark .section-head p{color:#b9becd}
    .text-link{color:var(--accent);font-weight:750;white-space:nowrap}
    .text-link:hover{text-decoration:underline}
    .triple{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .benefit{padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.25s}
    .benefit:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .benefit-icon{width:42px;height:42px;display:grid;place-items:center;background:#fff0f2;color:var(--accent);border-radius:12px;font-size:21px;margin-bottom:16px}
    .benefit h3{font-size:18px;margin-bottom:8px}
    .benefit p{color:var(--muted);margin-bottom:0;font-size:14px}
    .entry-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:16px}
    .entry{
      min-height:145px;padding:23px;border-radius:var(--radius);position:relative;overflow:hidden;
      border:1px solid var(--line);background:#fff;transition:.25s
    }
    .entry:first-child{background:var(--navy);color:#fff;grid-row:span 2;min-height:306px}
    .entry:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .entry h3{font-size:20px;margin:0 0 8px}
    .entry p{font-size:13px;color:var(--muted);margin:0;max-width:280px}
    .entry:first-child p{color:#c4c9d8}
    .entry-number{position:absolute;right:19px;bottom:9px;font-size:56px;font-weight:900;color:rgba(229,72,93,.11);line-height:1}
    .entry:first-child .entry-number{color:rgba(255,255,255,.1)}
    .content-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .video-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
    .video-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
    .thumb{height:188px;position:relative;overflow:hidden;background:#ddd}
    .thumb img{height:100%;transition:transform .45s}
    .video-card:hover .thumb img{transform:scale(1.06)}
    .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(transparent 48%,rgba(14,17,27,.72))}
    .thumb-label{position:absolute;z-index:1;top:11px;left:11px}
    .thumb-time{position:absolute;z-index:1;right:11px;bottom:9px;color:#fff;font-size:12px}
    .card-body{padding:16px}
    .card-title{font-size:16px;line-height:1.4;margin:0 0 10px;font-weight:800}
    .card-meta{display:flex;justify-content:space-between;align-items:center;gap:8px;color:var(--soft);font-size:12px}
    .rating{color:#b67a20;font-weight:800}
    .topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .topic{
      min-height:190px;padding:24px;border-radius:var(--radius);background:#fff;
      border:1px solid var(--line);position:relative;overflow:hidden
    }
    .topic::before{content:"";position:absolute;left:0;top:0;width:5px;height:100%;background:var(--accent)}
    .topic:nth-child(2)::before{background:#e3aa55}
    .topic:nth-child(3)::before{background:#39a77d}
    .topic:nth-child(4)::before{background:#6d83c8}
    .topic:nth-child(5)::before{background:#a87abf}
    .topic:nth-child(6)::before{background:#e47d55}
    .topic h3{font-size:20px;margin-bottom:8px}
    .topic p{font-size:14px;color:var(--muted);margin-bottom:15px}
    .topic span{font-size:12px;color:var(--accent);font-weight:800}
    .rank-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:start}
    .rank-list{border-top:1px solid rgba(255,255,255,.13)}
    .rank-item{display:grid;grid-template-columns:44px 1fr 82px 52px;align-items:center;gap:14px;padding:15px 0;border-bottom:1px solid rgba(255,255,255,.13)}
    .rank-no{font-size:25px;font-weight:900;color:#777d91}
    .rank-item:nth-child(1) .rank-no,.rank-item:nth-child(2) .rank-no,.rank-item:nth-child(3) .rank-no{color:var(--accent)}
    .rank-name{font-weight:750}
    .rank-cat{font-size:11px;color:#e9b2b9;border:1px solid rgba(229,72,93,.5);padding:2px 7px;border-radius:5px;width:max-content}
    .rank-hot{font-size:12px;color:#b8bece}
    .rank-score{color:#e7b15e;font-weight:800;text-align:right}
    .rank-side{padding:28px;background:#262c46;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius)}
    .rank-side h3{font-size:24px;margin-bottom:12px}
    .rank-side p{color:#b9becd;font-size:14px}
    .rank-stat{display:flex;justify-content:space-between;border-top:1px solid rgba(255,255,255,.13);padding:13px 0;color:#d9dce6}
    .news-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:35px}
    .news-feature{position:relative;border-radius:var(--radius);overflow:hidden;min-height:350px;background:#222}
    .news-feature img{height:350px;opacity:.82}
    .news-feature::after{content:"";position:absolute;inset:30% 0 0;background:linear-gradient(transparent,rgba(10,12,22,.9))}
    .news-caption{position:absolute;z-index:1;left:24px;right:24px;bottom:21px;color:#fff}
    .news-caption h3{font-size:24px;line-height:1.35;margin:8px 0 5px}
    .news-caption p{font-size:13px;color:#d8dbe5;margin:0}
    .news-list{display:flex;flex-direction:column;gap:13px}
    .news-item{display:grid;grid-template-columns:100px 1fr;gap:15px;align-items:center;padding-bottom:13px;border-bottom:1px solid var(--line)}
    .news-item img{height:72px;border-radius:11px}
    .news-item h3{font-size:15px;line-height:1.45;margin:0 0 4px}
    .news-item time{font-size:12px;color:var(--soft)}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid rgba(255,255,255,.15);border-bottom:1px solid rgba(255,255,255,.15)}
    .metric{padding:28px 24px;border-right:1px solid rgba(255,255,255,.15)}
    .metric:last-child{border-right:0}
    .metric strong{display:block;color:#fff;font-size:36px;line-height:1.2}
    .metric strong span{color:var(--accent)}
    .metric small{color:#b9becd}
    .quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .quote{background:#fff;padding:25px;border:1px solid var(--line);border-radius:var(--radius)}
    .quote-mark{font-size:35px;line-height:1;color:var(--accent);font-family:Georgia,serif}
    .quote p{font-size:14px;color:var(--muted);min-height:75px;margin:8px 0 17px}
    .quote-author{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:800}
    .avatar{width:34px;height:34px;border-radius:50%;background:#ffe3e7;color:var(--accent);display:grid;place-items:center}
    .contact-band{background:#fff4f5;padding:61px 0;border-top:1px solid #ffe1e5}
    .contact-wrap{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .contact-wrap h2{font-size:31px;margin-bottom:8px}
    .contact-wrap p{color:var(--muted);margin:0;max-width:650px}
    .age-note{font-size:12px;color:var(--soft);margin-top:13px}
    .site-footer{background:#111522;color:#aeb4c3;padding:55px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:40px;padding-bottom:40px}
    .footer-brand{color:#fff;font-size:18px;font-weight:800;margin-bottom:12px}
    .footer-brand span{color:var(--accent)}
    .footer-intro{font-size:13px;line-height:1.8;max-width:270px}
    .footer-col h3{font-size:14px;color:#fff;margin:0 0 15px}
    .footer-col a{display:block;font-size:13px;color:#aeb4c3;margin:9px 0;transition:.2s}
    .footer-col a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:12px}
    .age-modal{position:fixed;inset:0;z-index:50;background:rgba(11,13,21,.78);display:grid;place-items:center;padding:20px}
    .age-dialog{background:#fff;max-width:440px;width:100%;padding:34px;border-radius:20px;box-shadow:0 25px 70px rgba(0,0,0,.3);text-align:center}
    .age-dialog .brand-mark{margin:0 auto 15px}
    .age-dialog h2{font-size:25px;margin-bottom:9px}
    .age-dialog p{color:var(--muted);font-size:14px;margin-bottom:22px}
    .age-actions{display:flex;gap:10px;justify-content:center}
    .age-actions .btn{min-width:130px}
    @media (max-width:1024px){
      .hero-grid{gap:30px}
      .content-grid{grid-template-columns:repeat(3,1fr)}
      .thumb{height:175px}
      .rank-layout{gap:25px}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 30px),var(--max))}
      .nav-wrap{height:66px}
      .menu-toggle{display:block;margin-left:auto}
      .main-nav{
        display:none;position:absolute;top:66px;left:0;right:0;background:#fff;
        padding:12px 15px 18px;border-bottom:1px solid var(--line);box-shadow:0 14px 25px rgba(0,0,0,.08);
        flex-direction:column;align-items:stretch
      }
      .main-nav.open{display:flex}
      .main-nav a{text-align:center}
      .nav-action{display:none}
      .hero{padding:42px 0 38px}
      .hero-grid{grid-template-columns:1fr}
      .hero-feature{min-height:300px}
      .hero-feature img{height:300px}
      h1{font-size:43px}
      .section{padding:55px 0}
      .section-head{display:block}
      .section-head h2{font-size:28px;margin-bottom:9px}
      .section-head .text-link{display:inline-block;margin-top:12px}
      .triple,.topic-grid,.quotes{grid-template-columns:1fr}
      .entry-grid{grid-template-columns:1fr 1fr}
      .entry:first-child{grid-column:span 2;grid-row:auto;min-height:210px}
      .content-grid{grid-template-columns:repeat(2,1fr)}
      .rank-layout,.news-layout{grid-template-columns:1fr}
      .rank-side{display:none}
      .metrics{grid-template-columns:repeat(2,1fr)}
      .metric:nth-child(2){border-right:0}
      .metric:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.15)}
      .contact-wrap{display:block}
      .contact-wrap .btn{margin-top:20px}
      .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
      .footer-intro{max-width:100%}
    }
    @media (max-width:520px){
      body{font-size:14px}
      h1{font-size:37px}
      .hero-copy{font-size:15px}
      .hero-actions .btn{width:100%}
      .entry-grid{grid-template-columns:1fr}
      .entry:first-child{grid-column:auto}
      .content-grid{grid-template-columns:1fr 1fr;gap:11px}
      .thumb{height:145px}
      .card-body{padding:12px}
      .card-title{font-size:14px}
      .card-meta{font-size:11px}
      .rank-item{grid-template-columns:34px 1fr 46px;gap:8px}
      .rank-hot{display:none}
      .rank-score{font-size:13px}
      .news-feature,.news-feature img{min-height:280px;height:280px}
      .news-caption h3{font-size:20px}
      .metrics{gap:0}
      .metric{padding:21px 15px}
      .metric strong{font-size:28px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:24px 18px}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:7px}
      .age-dialog{padding:28px 21px}
    }