/* roulang page: index */
:root{
      --ink:#17212b;
      --muted:#6d7883;
      --paper:#f6f7f9;
      --panel:#ffffff;
      --line:#e4e8ed;
      --navy:#10283d;
      --blue:#176b87;
      --cyan:#42b9b0;
      --gold:#d39a45;
      --soft:#eaf3f3;
      --radius:16px;
      --shadow:0 14px 36px rgba(19,39,53,.09);
      --max:1200px;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:15px}
    a{color:inherit;text-decoration:none}
    img{display:block;width:100%;object-fit:cover}
    button,input{font:inherit}
    button{cursor:pointer;border:0}
    :focus-visible{outline:3px solid rgba(66,185,176,.45);outline-offset:3px}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--cyan)}
    .section{padding:88px 0}
    .section.alt{background:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:32px}
    .section-head h2{font-size:clamp(25px,3vw,38px);line-height:1.25;letter-spacing:0;font-weight:800;margin-top:10px}
    .section-head p{max-width:560px;color:var(--muted);font-size:14px}
    .header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(228,232,237,.85)}
    .nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:12px;min-width:max-content;font-weight:800;font-size:17px}
    .brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--navy);color:#fff;font-size:18px;box-shadow:0 8px 18px rgba(16,40,61,.2)}
    .nav-links{display:flex;align-items:center;gap:5px}
    .nav-links a{padding:10px 14px;border-radius:9px;color:#52616d;font-size:14px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--navy);background:var(--soft)}
    .nav-action{padding:11px 17px;background:var(--navy);color:#fff;border-radius:9px;font-weight:700;font-size:13px;transition:.2s}
    .nav-action:hover{background:var(--blue);transform:translateY(-2px)}
    .menu-toggle{display:none;background:transparent;font-size:25px;color:var(--navy)}
    .hero{position:relative;min-height:625px;display:flex;align-items:center;overflow:hidden;background:var(--navy);color:#fff}
    .hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,29,45,.96) 0%,rgba(9,29,45,.78) 43%,rgba(9,29,45,.15) 100%),url("https://images.unsplash.com/photo-1489599849927-2ee91cede3ba?auto=format&fit=crop&w=1900&q=88") center/cover}
    .hero .container{position:relative;z-index:1}
    .hero-copy{max-width:710px;padding:92px 0 70px}
    .hero .eyebrow{color:#8bd9d1}
    .hero h1{font-size:clamp(39px,6vw,72px);line-height:1.12;letter-spacing:0;font-weight:900;margin:20px 0}
    .hero h1 em{font-style:normal;color:#81d7cd}
    .hero-lead{font-size:20px;color:#e1ebee;margin-bottom:16px}
    .hero-copy p:not(.hero-lead){max-width:650px;color:#c3d2d8;font-size:15px}
    .hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:9px;padding:13px 20px;font-weight:700;font-size:14px;transition:.2s}
    .btn-primary{background:var(--cyan);color:#092a35}
    .btn-primary:hover{background:#69d2c7;transform:translateY(-2px)}
    .btn-light{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.3);color:#fff}
    .btn-light:hover{background:#fff;color:var(--navy)}
    .hero-meta{display:flex;gap:26px;margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.2);color:#b8c9ce}
    .hero-meta strong{display:block;color:#fff;font-size:24px;line-height:1.2}
    .hero-meta span{font-size:12px}
    .intro-strip{background:#fff;border-bottom:1px solid var(--line)}
    .strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
    .strip-item{padding:22px 24px;border-right:1px solid var(--line)}
    .strip-item:first-child{padding-left:0}
    .strip-item:last-child{border:0}
    .strip-item strong{font-size:25px;color:var(--navy);display:block}
    .strip-item span{font-size:13px;color:var(--muted)}
    .card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
    .content-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;box-shadow:0 2px 0 rgba(10,30,40,.02)}
    .content-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#c9dfe0}
    .poster{position:relative;aspect-ratio:4/5;background:#dce5e7;overflow:hidden}
    .poster img{height:100%;transition:.35s}
    .content-card:hover .poster img{transform:scale(1.04)}
    .badge{position:absolute;left:12px;top:12px;padding:4px 8px;border-radius:5px;background:rgba(16,40,61,.88);color:#fff;font-size:11px;font-weight:700}
    .badge.gold{background:var(--gold)}
    .card-body{padding:16px}
    .card-body h3{font-size:17px;line-height:1.4;margin-bottom:7px}
    .card-body p{font-size:13px;color:var(--muted);line-height:1.6;min-height:42px}
    .card-meta{display:flex;justify-content:space-between;align-items:center;margin-top:13px;padding-top:12px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
    .score{color:var(--gold);font-weight:800}
    .wide-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:26px}
    .feature-panel{min-height:320px;padding:34px;border-radius:var(--radius);background:var(--navy);color:#fff;position:relative;overflow:hidden}
    .feature-panel:after{content:"";position:absolute;right:-70px;bottom:-100px;width:260px;height:260px;border:1px solid rgba(129,215,205,.35);border-radius:50%}
    .feature-panel h3{font-size:28px;line-height:1.3;margin:14px 0}
    .feature-panel p{color:#bdd0d4;max-width:550px}
    .feature-panel .mini-line{display:flex;gap:18px;margin-top:28px}
    .mini-line span{font-size:12px;color:#a8c4c8}
    .mini-line strong{display:block;color:#fff;font-size:22px}
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:78px 1fr;gap:18px;padding:17px 0;border-bottom:1px solid var(--line)}
    .timeline-item:last-child{border:0}
    .timeline-item time{font-size:12px;color:var(--blue);font-weight:800;padding-top:3px}
    .timeline-item h3{font-size:16px}
    .timeline-item p{font-size:13px;color:var(--muted);line-height:1.55}
    .category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .category{padding:24px;background:#fff;border:1px solid var(--line);border-radius:13px;transition:.2s}
    .category:hover{border-color:var(--cyan);background:var(--soft)}
    .category-index{color:var(--cyan);font-size:12px;font-weight:800}
    .category h3{font-size:19px;margin:8px 0}
    .category p{color:var(--muted);font-size:13px;line-height:1.65}
    .ranking-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:28px}
    .ranking-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .rank-row{display:grid;grid-template-columns:50px 1fr 82px 62px;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:var(--soft)}
    .rank-no{font-size:22px;color:#aeb8bf;font-weight:800}
    .rank-row:nth-child(-n+3) .rank-no{color:var(--gold)}
    .rank-title{font-weight:700;font-size:14px}
    .rank-type{font-size:11px;color:var(--blue);background:var(--soft);padding:3px 7px;border-radius:4px;width:max-content}
    .heat{font-size:12px;color:var(--muted)}
    .rank-score{font-weight:800;color:var(--gold)}
    .editor-note{background:#eaf3f3;border-radius:var(--radius);padding:31px}
    .editor-note h3{font-size:24px;line-height:1.35;margin:12px 0}
    .editor-note p{font-size:14px;color:#526c73}
    .quote{margin-top:24px;padding-top:20px;border-top:1px solid #c9dddd;color:var(--navy);font-weight:700;font-size:14px}
    .news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .news-card{display:grid;grid-template-columns:120px 1fr;gap:16px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:13px;transition:.2s}
    .news-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
    .news-card img{height:100px;border-radius:8px}
    .news-card h3{font-size:15px;line-height:1.45;margin:4px 0 8px}
    .news-card time{font-size:11px;color:var(--muted)}
    .news-card p{font-size:12px;color:var(--muted);line-height:1.5}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    details{background:#fff;border:1px solid var(--line);border-radius:11px;padding:18px 20px}
    summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:10px}
    summary:after{content:"+";color:var(--blue);font-size:20px;line-height:1}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:13px;line-height:1.7;padding-top:13px}
    .subscribe{background:var(--navy);color:#fff;padding:58px 0}
    .subscribe-wrap{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .subscribe h2{font-size:30px;line-height:1.3}
    .subscribe p{color:#b9cbd0;margin-top:8px;font-size:14px}
    .subscribe-form{display:flex;min-width:430px}
    .subscribe-form input{flex:1;border:0;padding:14px 16px;border-radius:8px 0 0 8px;color:var(--ink);background:#fff}
    .subscribe-form button{padding:0 20px;border-radius:0 8px 8px 0;background:var(--cyan);font-weight:800;color:#082b35}
    .footer{background:#0b1d2b;color:#a9bbc1;padding:54px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:40px;padding-bottom:42px}
    .footer .brand{color:#fff;margin-bottom:15px}
    .footer-intro{font-size:13px;line-height:1.8;max-width:280px}
    .footer h3{color:#fff;font-size:14px;margin-bottom:15px}
    .footer a{display:block;font-size:13px;margin:9px 0;color:#a9bbc1;transition:.2s}
    .footer a:hover{color:#81d7cd}
    .copyright{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;font-size:12px;display:flex;justify-content:space-between;gap:20px}
    @media(max-width:1024px){
      .card-grid{grid-template-columns:repeat(3,1fr)}
      .hero{min-height:570px}
      .ranking-layout,.wide-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1.3fr repeat(3,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .section{padding:62px 0}
      .nav{height:66px}
      .menu-toggle{display:block}
      .nav-links{display:none;position:absolute;top:66px;left:0;right:0;padding:10px 16px 18px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 15px 24px rgba(10,30,40,.08);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}
      .nav-links a{padding:12px 14px}
      .nav-action{display:none}
      .hero-copy{padding:70px 0 56px}
      .hero h1{font-size:44px}
      .hero-meta{gap:18px;flex-wrap:wrap}
      .strip-grid{grid-template-columns:repeat(2,1fr)}
      .strip-item{padding:17px 16px;border-bottom:1px solid var(--line)}
      .strip-item:nth-child(2){border-right:0}
      .strip-item:first-child{padding-left:16px}
      .card-grid{grid-template-columns:repeat(2,1fr);gap:14px}
      .category-grid,.news-grid,.faq-grid{grid-template-columns:1fr 1fr}
      .subscribe-wrap{display:block}
      .subscribe-form{min-width:0;margin-top:24px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    }
    @media(max-width:520px){
      .section-head{display:block}
      .section-head p{margin-top:14px}
      .hero h1{font-size:38px}
      .hero-lead{font-size:17px}
      .hero-actions .btn{width:100%}
      .card-grid,.category-grid,.news-grid,.faq-grid{grid-template-columns:1fr}
      .poster{aspect-ratio:16/10}
      .rank-row{grid-template-columns:37px 1fr 52px}
      .rank-row .heat{display:none}
      .news-card{grid-template-columns:100px 1fr}
      .news-card img{height:88px}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:block}
      .copyright span{display:block;margin-top:8px}
    }