/* roulang page: index */
:root{
      --ink:#101820;
      --ink-soft:#24313a;
      --paper:#f5f7f8;
      --white:#ffffff;
      --muted:#68757c;
      --line:#dfe6e8;
      --red:#e84b45;
      --red-deep:#b83235;
      --cyan:#46c5c7;
      --yellow:#f5c451;
      --shadow:0 18px 45px rgba(16,24,32,.10);
      --shadow-small:0 8px 22px rgba(16,24,32,.08);
      --radius:18px;
      --radius-small:10px;
      --max:1180px;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;color:var(--ink);background:var(--paper);font-size:15px}
    a{color:inherit;text-decoration:none}
    img{display:block;width:100%;object-fit:cover}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    .container{width:min(var(--max),calc(100% - 40px));margin:0 auto}
    .section{padding:92px 0}
    .section.alt{background:var(--white)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:34px}
    .section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--red-deep);font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;margin-bottom:10px}
    .section-kicker:before{content:"";width:24px;height:3px;background:var(--red);display:inline-block}
    h1,h2,h3{line-height:1.2;letter-spacing:0}
    h1{font-size:clamp(38px,5vw,68px);max-width:760px}
    h2{font-size:clamp(28px,3vw,42px)}
    h3{font-size:18px}
    .section-head p{max-width:520px;color:var(--muted);font-size:15px}
    .accent{color:var(--red)}
    .header{position:sticky;top:0;z-index:20;background:rgba(245,247,248,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(223,230,232,.85)}
    .nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:12px;font-weight:900;white-space:nowrap}
    .brand-mark{width:40px;height:40px;border-radius:11px;background:var(--red);color:#fff;display:grid;place-items:center;font-size:18px;box-shadow:4px 4px 0 var(--ink)}
    .brand-name{font-size:16px}
    .nav-links{display:flex;align-items:center;gap:26px;color:var(--ink-soft);font-size:14px;font-weight:700}
    .nav-links a{position:relative;padding:25px 0}
    .nav-links a:after{content:"";height:3px;width:0;position:absolute;bottom:16px;left:0;background:var(--red);transition:.25s}
    .nav-links a:hover,.nav-links a.active{color:var(--red-deep)}
    .nav-links a:hover:after,.nav-links a.active:after{width:100%}
    .nav-action{display:inline-flex;align-items:center;gap:8px;background:var(--ink);color:#fff;padding:10px 16px;border-radius:9px;font-weight:800;font-size:13px;transition:.25s}
    .nav-action:hover{background:var(--red);transform:translateY(-2px)}
    .menu-toggle{display:none;background:transparent;color:var(--ink);font-size:26px}
    .hero{position:relative;min-height:650px;display:flex;align-items:center;overflow:hidden;background:var(--ink);color:#fff}
    .hero:before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(16,24,32,.98) 18%,rgba(16,24,32,.82) 54%,rgba(16,24,32,.35)),url("https://images.unsplash.com/photo-1516589178581-6cd7833ae3b2?auto=format&fit=crop&w=1800&q=85") center/cover}
    .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.25fr .75fr;gap:70px;align-items:center}
    .hero-content{padding:76px 0}
    .location{display:inline-flex;align-items:center;gap:9px;color:#b9e6e4;font-size:13px;font-weight:700;margin-bottom:22px}
    .location i{width:8px;height:8px;background:var(--cyan);border-radius:50%;box-shadow:0 0 0 6px rgba(70,197,199,.17)}
    .hero h1{margin-bottom:22px}
    .hero h1 span{color:var(--yellow)}
    .hero-lead{max-width:690px;color:#d9e0e3;font-size:17px;line-height:1.95;margin-bottom:30px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 21px;border-radius:9px;font-weight:800;font-size:14px;transition:.25s;border:1px solid transparent}
    .btn-primary{background:var(--red);color:#fff;box-shadow:0 8px 18px rgba(232,75,69,.28)}
    .btn-primary:hover{background:#f26760;transform:translateY(-2px)}
    .btn-light{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.28);color:#fff}
    .btn-light:hover{background:#fff;color:var(--ink)}
    .hero-panel{align-self:end;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);padding:24px;border-radius:var(--radius);backdrop-filter:blur(10px);margin-bottom:70px}
    .hero-panel-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px;color:#b9c9ce;font-size:12px}
    .live-dot{color:#c9f7e3;display:flex;gap:7px;align-items:center}
    .live-dot:before{content:"";width:7px;height:7px;background:#62e1a7;border-radius:50%}
    .hero-score{font-size:42px;font-weight:900;color:#fff;line-height:1;margin:4px 0 10px}
    .hero-panel p{color:#b9c9ce;font-size:13px}
    .meter{height:6px;background:rgba(255,255,255,.16);margin-top:19px;border-radius:8px;overflow:hidden}
    .meter span{display:block;width:88%;height:100%;background:var(--cyan)}
    .metric-strip{background:var(--red);color:#fff}
    .metric-grid{display:grid;grid-template-columns:repeat(4,1fr)}
    .metric{padding:24px 18px;border-right:1px solid rgba(255,255,255,.25)}
    .metric:last-child{border:0}
    .metric strong{display:block;font-size:27px;line-height:1.2}
    .metric span{font-size:13px;opacity:.86}
    .story{display:grid;grid-template-columns:.9fr 1.1fr;gap:80px;align-items:center}
    .story-visual{position:relative}
    .story-visual img{height:430px;border-radius:var(--radius);box-shadow:var(--shadow)}
    .story-stamp{position:absolute;right:-22px;bottom:24px;background:var(--yellow);color:var(--ink);padding:18px 20px;border-radius:12px;font-weight:900;box-shadow:var(--shadow-small)}
    .story-copy p{color:var(--muted);font-size:16px;line-height:1.95;margin:20px 0}
    .mini-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:28px}
    .mini-list div{border-left:3px solid var(--cyan);padding:8px 0 8px 13px;font-weight:800}
    .mini-list small{display:block;color:var(--muted);font-weight:400;font-size:12px}
    .series-nav{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .series-item{padding:23px 20px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-small);transition:.25s}
    .series-item:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-4px);box-shadow:var(--shadow-small)}
    .series-item b{display:block;font-size:20px;margin-bottom:7px}
    .series-item span{color:var(--muted);font-size:13px}
    .series-item:hover span{color:#b9c9ce}
    .video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
    .video-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-small);overflow:hidden;transition:.28s}
    .video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:#c6d2d5}
    .thumb{height:205px;position:relative;overflow:hidden;background:#dbe4e6}
    .thumb img{height:100%;transition:.35s}
    .video-card:hover .thumb img{transform:scale(1.05)}
    .thumb:after{content:"▶";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:46px;height:46px;border-radius:50%;background:rgba(16,24,32,.78);color:#fff;display:grid;place-items:center;font-size:15px;opacity:0;transition:.25s}
    .video-card:hover .thumb:after{opacity:1}
    .badge{position:absolute;top:12px;left:12px;padding:4px 8px;border-radius:5px;background:var(--red);color:#fff;font-size:11px;font-weight:900;z-index:1}
    .badge.cyan{background:var(--cyan);color:var(--ink)}
    .badge.yellow{background:var(--yellow);color:var(--ink)}
    .card-body{padding:16px}
    .card-body h3{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:8px}
    .card-meta{display:flex;justify-content:space-between;gap:8px;color:var(--muted);font-size:12px}
    .rating{color:#d89a18;font-weight:900}
    .topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .topic{min-height:190px;padding:27px;background:var(--ink);color:#fff;border-radius:var(--radius);position:relative;overflow:hidden}
    .topic:nth-child(2){background:var(--red)}
    .topic:nth-child(3){background:#16777d}
    .topic:nth-child(4){background:#c98b28}
    .topic:nth-child(5){background:#344c5c}
    .topic h3{margin-bottom:12px}
    .topic p{color:rgba(255,255,255,.78);font-size:13px;line-height:1.8}
    .topic strong{position:absolute;right:24px;bottom:17px;font-size:38px;opacity:.18}
    .rank-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:24px}
    .rank-list{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .rank-row{display:grid;grid-template-columns:48px 1fr 100px 60px;align-items:center;gap:14px;padding:15px 20px;border-bottom:1px solid var(--line);transition:.2s}
    .rank-row:last-child{border:0}
    .rank-row:hover{background:#f9fbfb}
    .rank-no{font-size:20px;font-weight:900;color:#a9b7bb}
    .rank-row:nth-child(-n+3) .rank-no{color:var(--red)}
    .rank-title{font-weight:800}
    .rank-title small{display:block;color:var(--muted);font-size:11px;font-weight:400}
    .heat{color:var(--red-deep);font-size:12px;font-weight:800}
    .rank-score{font-weight:900;text-align:right}
    .rank-note{background:var(--ink);border-radius:var(--radius);color:#fff;padding:28px;display:flex;flex-direction:column;justify-content:center}
    .rank-note h3{font-size:25px;margin-bottom:14px}
    .rank-note p{color:#bdc9cd;font-size:14px;line-height:1.9}
    .news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .news-card{display:grid;grid-template-columns:108px 1fr;gap:16px;align-items:center;background:var(--white);padding:12px;border:1px solid var(--line);border-radius:var(--radius-small);transition:.25s}
    .news-card:hover{box-shadow:var(--shadow-small);transform:translateY(-3px)}
    .news-card img{height:86px;border-radius:8px}
    .news-card h3{font-size:15px;line-height:1.45;margin-bottom:6px}
    .news-card time{font-size:11px;color:var(--muted)}
    .trust{background:#eaf4f3}
    .trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
    .trust-item{padding:22px 0;border-right:1px solid #c5dedc;display:flex;gap:14px;align-items:flex-start}
    .trust-item:last-child{border:0}
    .trust-icon{width:38px;height:38px;border-radius:9px;background:var(--white);display:grid;place-items:center;color:var(--red);font-size:19px;font-weight:900;flex:none}
    .trust-item h3{font-size:15px;margin-bottom:5px}
    .trust-item p{font-size:12px;color:var(--muted);line-height:1.55}
    .voices{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .voice{background:var(--white);border:1px solid var(--line);padding:25px;border-radius:var(--radius);position:relative}
    .voice:before{content:"“";position:absolute;right:20px;top:9px;font-size:56px;color:#dce9e8;font-family:Georgia}
    .voice p{font-size:14px;line-height:1.9;margin-bottom:18px}
    .voice strong{font-size:13px}
    .voice span{display:block;color:var(--muted);font-size:11px}
    .entry{background:var(--ink);color:#fff;padding:70px 0}
    .entry-inner{display:flex;justify-content:space-between;align-items:center;gap:35px}
    .entry h2{max-width:660px}
    .entry p{color:#bdc9cd;max-width:620px;margin-top:14px}
    .faq-wrap{max-width:880px;margin:0 auto}
    .faq{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-q{width:100%;background:transparent;text-align:left;padding:21px 4px;display:flex;justify-content:space-between;align-items:center;font-weight:800;color:var(--ink);font-size:16px}
    .faq-q span{color:var(--red);font-size:22px;transition:.2s}
    .faq-a{max-height:0;overflow:hidden;color:var(--muted);font-size:14px;line-height:1.9;transition:max-height .3s,padding .3s}
    .faq-item.open .faq-a{max-height:180px;padding:0 38px 20px 4px}
    .faq-item.open .faq-q span{transform:rotate(45deg)}
    .footer{background:#0b1115;color:#dce5e7;padding:58px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:45px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.14)}
    .footer .brand{color:#fff;margin-bottom:17px}
    .footer-intro{color:#91a1a6;font-size:13px;line-height:1.9;max-width:320px}
    .footer h3{font-size:14px;color:#fff;margin-bottom:16px}
    .footer a,.footer p{display:block;color:#91a1a6;font-size:13px;margin-bottom:8px}
    .footer a:hover{color:var(--yellow)}
    .copyright{padding-top:20px;color:#718188;font-size:12px;display:flex;justify-content:space-between;gap:20px}
    :focus-visible{outline:3px solid var(--yellow);outline-offset:3px}
    @media(max-width:1024px){
      .hero-grid{gap:35px}
      .video-grid{grid-template-columns:repeat(3,1fr)}
      .series-nav{grid-template-columns:repeat(3,1fr)}
      .footer-grid{grid-template-columns:1.5fr repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 28px))}
      .section{padding:65px 0}
      .nav{height:68px}
      .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--white);padding:12px 20px 20px;flex-direction:column;align-items:stretch;gap:0;border-bottom:1px solid var(--line);box-shadow:var(--shadow-small)}
      .nav-links.open{display:flex}
      .nav-links a{padding:13px 0;border-bottom:1px solid var(--line)}
      .nav-links a:after{display:none}
      .nav-action{display:none}
      .menu-toggle{display:block}
      .hero{min-height:auto}
      .hero:before{background:linear-gradient(100deg,rgba(16,24,32,.96),rgba(16,24,32,.72)),url("https://images.unsplash.com/photo-1516589178581-6cd7833ae3b2?auto=format&fit=crop&w=1200&q=80") center/cover}
      .hero-grid{grid-template-columns:1fr}
      .hero-content{padding:75px 0 25px}
      .hero-panel{margin:0 0 55px;max-width:420px}
      .metric-grid{grid-template-columns:repeat(2,1fr)}
      .metric{border-bottom:1px solid rgba(255,255,255,.25)}
      .story,.rank-layout{grid-template-columns:1fr;gap:35px}
      .story-visual img{height:330px}
      .topic-grid{grid-template-columns:repeat(2,1fr)}
      .news-grid{grid-template-columns:repeat(2,1fr)}
      .trust-grid{grid-template-columns:repeat(2,1fr)}
      .trust-item:nth-child(2){border:0}
      .entry-inner{display:block}
      .entry .btn{margin-top:25px}
      .footer-grid{grid-template-columns:repeat(2,1fr);gap:30px}
      .footer-grid>div:first-child{grid-column:1/-1}
    }
    @media(max-width:520px){
      h1{font-size:39px}
      h2{font-size:29px}
      .section-head{display:block}
      .section-head p{margin-top:14px}
      .hero-lead{font-size:15px}
      .hero-actions .btn{width:100%}
      .metric strong{font-size:23px}
      .series-nav,.video-grid,.topic-grid,.news-grid,.voices,.trust-grid{grid-template-columns:1fr}
      .story-visual img{height:270px}
      .story-stamp{right:12px}
      .mini-list{grid-template-columns:1fr}
      .rank-row{grid-template-columns:34px 1fr 54px;gap:9px;padding:14px 12px}
      .rank-row .heat{display:none}
      .rank-score{font-size:13px}
      .news-card{grid-template-columns:92px 1fr}
      .news-card img{height:76px}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:first-child{grid-column:auto}
      .copyright{display:block}
      .copyright span{display:block;margin-top:6px}
    }