/* roulang page: index */
:root{
  --ink:#17151a;
  --ink-2:#211d25;
  --panel:#29242d;
  --panel-2:#332c37;
  --paper:#f5f1ea;
  --paper-2:#ebe5dc;
  --amber:#f5a623;
  --amber-2:#ffc45b;
  --mint:#8de0bf;
  --wine:#8f4059;
  --text:#f8f4ed;
  --muted:#bcb2b8;
  --dark-text:#302a31;
  --dark-muted:#706770;
  --line:rgba(255,255,255,.13);
  --line-dark:rgba(48,42,49,.14);
  --radius:18px;
  --radius-sm:11px;
  --shadow:0 18px 45px rgba(10,8,12,.22);
  --ease:all .25s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;background:var(--paper);color:var(--dark-text);line-height:1.75}
a{color:inherit;text-decoration:none}
button{font:inherit;border:0;cursor:pointer}
img{max-width:100%;display:block}
.container{width:min(1160px,calc(100% - 40px));margin:0 auto}
.site-header{height:76px;background:var(--ink);color:var(--text);position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line)}
.header-inner{height:100%;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:11px;min-width:238px}
.logo-mark{width:34px;height:34px;border-radius:9px;background:var(--amber);color:var(--ink);display:grid;place-items:center;font-weight:900;font-size:18px;box-shadow:4px 4px 0 var(--wine)}
.logo-text{font-size:17px;font-weight:800;letter-spacing:.01em}
.logo-text small{display:block;color:var(--amber-2);font-size:10px;line-height:1.2;letter-spacing:.14em;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.main-nav a{padding:10px 13px;color:#d8d0d2;font-size:14px;border-radius:8px;transition:var(--ease)}
.main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--amber-2);background:rgba(245,166,35,.1)}
.header-download{padding:11px 17px;background:var(--amber);color:var(--ink);font-size:14px;font-weight:800;border-radius:9px;transition:var(--ease);white-space:nowrap}
.header-download:hover{background:var(--amber-2);transform:translateY(-2px)}
.menu-toggle{display:none;background:transparent;color:var(--text);font-size:25px}
.hero{background:var(--ink);color:var(--text);position:relative;overflow:hidden;padding:88px 0 92px}
.hero:before{content:"";position:absolute;width:420px;height:420px;border:1px solid rgba(245,166,35,.22);border-radius:50%;right:-100px;top:-160px}
.hero:after{content:"";position:absolute;width:190px;height:190px;background:var(--wine);opacity:.23;transform:rotate(24deg);right:18%;bottom:-125px}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:68px;align-items:center;position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--amber-2);font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:18px}
.eyebrow:before{content:"";width:24px;height:2px;background:var(--amber)}
.hero h1{font-size:clamp(34px,4.5vw,58px);line-height:1.18;letter-spacing:-.04em;max-width:690px;margin-bottom:22px}
.hero h1 span{color:var(--amber-2)}
.hero-copy{font-size:17px;color:#c9c0c3;max-width:610px;margin-bottom:32px}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:9px;font-weight:800;font-size:14px;transition:var(--ease);border:1px solid transparent}
.btn-primary{background:var(--amber);color:var(--ink)}
.btn-primary:hover,.btn-primary:focus{background:var(--amber-2);transform:translateY(-2px);box-shadow:0 8px 18px rgba(245,166,35,.2)}
.btn-outline{border-color:rgba(255,255,255,.3);color:var(--text)}
.btn-outline:hover,.btn-outline:focus{border-color:var(--mint);color:var(--mint);background:rgba(141,224,191,.08)}
.hero-note{display:flex;gap:18px;margin-top:28px;color:var(--muted);font-size:12px;flex-wrap:wrap}
.hero-note strong{color:var(--mint);font-size:13px;margin-right:5px}
.download-preview{background:#211d25;border:1px solid rgba(245,166,35,.36);border-radius:22px;padding:25px;box-shadow:var(--shadow);position:relative}
.preview-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:24px}
.preview-label{font-weight:800}.status{font-size:11px;color:var(--mint);display:flex;align-items:center;gap:6px}
.status:before{content:"";width:7px;height:7px;background:var(--mint);border-radius:50%}
.app-screen{height:180px;border-radius:14px;background:linear-gradient(135deg,#493846,#26232d);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;margin-bottom:22px}
.app-screen:before{content:"PG";font-size:105px;font-weight:900;color:rgba(245,166,35,.16);position:absolute;letter-spacing:-.12em}
.screen-center{width:104px;height:104px;border:2px solid var(--amber);border-radius:16px;display:grid;place-items:center;color:var(--amber-2);font-size:31px;font-weight:900;z-index:1;transform:rotate(-4deg)}
.preview-info{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-bottom:22px}
.info-cell{border-left:2px solid var(--wine);padding-left:11px}
.info-cell small{display:block;color:var(--muted);font-size:11px}.info-cell b{font-size:14px}
.preview-button{width:100%}
.section{padding:88px 0}
.section-dark{background:var(--ink-2);color:var(--text)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:32px}
.section-kicker{color:var(--wine);font-weight:900;font-size:13px;letter-spacing:.08em}
.section-dark .section-kicker{color:var(--mint)}
.section h2{font-size:clamp(27px,3vw,40px);line-height:1.25;margin-top:7px;letter-spacing:-.03em}
.section-intro{max-width:490px;color:var(--dark-muted);font-size:15px}
.section-dark .section-intro{color:var(--muted)}
.quick-links{background:var(--amber);padding:18px 0}
.quick-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:rgba(23,21,26,.18)}
.quick-item{padding:13px 18px;display:flex;align-items:center;gap:12px;color:var(--ink);transition:var(--ease)}
.quick-item:hover{background:rgba(255,255,255,.22)}
.quick-no{font-weight:900;font-size:12px;color:var(--wine)}
.quick-item strong{display:block;font-size:14px;line-height:1.3}.quick-item span{display:block;font-size:11px;opacity:.7}
.feature-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:28px;align-items:stretch}
.feature-panel{background:var(--ink);color:var(--text);border-radius:var(--radius);padding:35px;position:relative;overflow:hidden;min-height:360px}
.feature-panel:after{content:"PGemulator";position:absolute;right:-34px;bottom:14px;color:rgba(245,166,35,.1);font-size:48px;font-weight:900;transform:rotate(-12deg)}
.feature-panel h3{font-size:27px;line-height:1.3;margin:14px 0}
.feature-panel p{color:var(--muted);font-size:14px}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:25px}
.tag{font-size:11px;padding:5px 9px;border:1px solid rgba(141,224,191,.45);color:var(--mint);border-radius:5px}
.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.feature-card{background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius-sm);padding:24px;transition:var(--ease)}
.feature-card:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(48,42,49,.1);border-color:rgba(245,166,35,.6)}
.feature-icon{width:38px;height:38px;border-radius:9px;background:#fff1d5;color:#a46200;display:grid;place-items:center;font-weight:900;margin-bottom:16px}
.feature-card h3{font-size:18px;margin-bottom:8px}.feature-card p{font-size:13px;color:var(--dark-muted)}
.split-download{display:grid;grid-template-columns:1fr 1fr;gap:45px;align-items:center}
.download-copy h2{margin-bottom:17px}.download-copy p{color:var(--muted);max-width:520px}
.check-list{list-style:none;margin:23px 0}.check-list li{margin:9px 0;color:#ddd3d5;font-size:14px}.check-list li:before{content:"✓";color:var(--mint);font-weight:900;margin-right:10px}
.version-box{background:var(--paper);color:var(--dark-text);padding:28px;border-radius:var(--radius);box-shadow:var(--shadow);border-top:4px solid var(--amber)}
.version-heading{display:flex;justify-content:space-between;gap:15px;align-items:start;margin-bottom:22px}.version-heading h3{font-size:24px}.version-badge{font-size:11px;color:#24644d;background:#d9f3e8;padding:5px 8px;border-radius:5px;white-space:nowrap}
.version-meta{display:grid;grid-template-columns:1fr 1fr;gap:14px;border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark);padding:17px 0;margin-bottom:22px}.version-meta small{display:block;color:var(--dark-muted);font-size:11px}.version-meta strong{font-size:14px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line-dark)}
.step{padding:25px 20px 10px 0;position:relative}.step:not(:last-child):after{content:"→";position:absolute;right:13px;top:28px;color:var(--amber);font-size:22px}
.step-number{color:var(--amber);font-weight:900;font-size:13px}.step h3{font-size:17px;margin:8px 0}.step p{font-size:13px;color:var(--dark-muted)}
.news-wrap{display:grid;grid-template-columns:.72fr 1.28fr;gap:42px;align-items:start}
.news-lead{background:var(--wine);color:#fff;padding:29px;border-radius:var(--radius);min-height:210px}.news-lead h3{font-size:24px;line-height:1.35;margin:12px 0}.news-lead p{font-size:13px;color:#ead9de}
.news-list{border-top:1px solid var(--line-dark)}
.news-item{display:grid;grid-template-columns:105px 1fr auto;gap:18px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line-dark);transition:var(--ease)}
.news-item:hover{padding-left:8px}.news-date{font-size:12px;color:var(--dark-muted)}.news-type{display:inline-block;color:#9b5d00;background:#fff0d1;padding:3px 7px;border-radius:4px;font-size:11px;margin-bottom:5px}.news-item h3{font-size:16px}.news-item p{font-size:12px;color:var(--dark-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.news-arrow{color:var(--wine);font-size:20px}
.empty-state{padding:25px 0;color:var(--dark-muted);font-size:14px}
.faq-section{background:var(--paper-2)}
.faq-list{max-width:850px;margin:0 auto;border-top:1px solid var(--line-dark)}
.faq-item{border-bottom:1px solid var(--line-dark)}
.faq-question{width:100%;background:transparent;padding:21px 0;text-align:left;display:flex;justify-content:space-between;gap:20px;font-weight:800;color:var(--dark-text);font-size:16px}
.faq-question span:last-child{color:var(--wine);font-size:23px;line-height:1;transition:var(--ease)}
.faq-answer{max-height:0;overflow:hidden;color:var(--dark-muted);font-size:14px;transition:max-height .3s ease;padding-right:45px}
.faq-item.open .faq-answer{max-height:180px;padding-bottom:20px}.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
.cta{padding:62px 0;background:var(--amber);color:var(--ink)}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{font-size:32px;line-height:1.3}.cta p{font-size:14px;margin-top:7px}.cta .btn{background:var(--ink);color:#fff}.cta .btn:hover{background:var(--wine)}
.site-footer{background:var(--ink);color:var(--text);padding:45px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px;padding-bottom:35px;border-bottom:1px solid var(--line)}
.footer-brand p{color:var(--muted);font-size:13px;max-width:310px;margin-top:14px}.footer-title{font-weight:800;margin-bottom:13px}.footer-links{display:grid;gap:8px;color:var(--muted);font-size:13px}.footer-links a:hover{color:var(--amber-2)}
.copyright{display:flex;justify-content:space-between;gap:20px;color:#81767d;font-size:11px;padding-top:18px}.copyright a:hover{color:var(--amber-2)}
:focus-visible{outline:3px solid var(--mint);outline-offset:3px}
@media(max-width:1024px){.hero-grid{gap:35px}.main-nav a{padding-left:8px;padding-right:8px}.logo{min-width:210px}.quick-item{padding-left:10px;padding-right:10px}}
@media(max-width:768px){
 .container{width:min(100% - 30px,600px)}.site-header{height:68px}.logo{min-width:0;flex:1}.logo-text{font-size:15px}.main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--ink);padding:12px 15px 20px;flex-direction:column;align-items:stretch;border-top:1px solid var(--line)}.main-nav.show{display:flex}.main-nav a{padding:13px 15px}.header-download{padding:9px 12px;font-size:12px}.menu-toggle{display:block}
 .hero{padding:62px 0 65px}.hero-grid,.feature-layout,.split-download,.news-wrap{grid-template-columns:1fr}.hero h1{font-size:38px}.hero-copy{font-size:15px}.hero-grid{gap:38px}.quick-grid{grid-template-columns:repeat(2,1fr)}.quick-item{padding:14px 10px}.quick-item:last-child{grid-column:span 2}
 .section{padding:65px 0}.section-head{display:block}.section-intro{margin-top:12px}.feature-list{gap:10px}.feature-card{padding:19px}.steps{grid-template-columns:1fr 1fr;gap:10px}.step{padding-right:18px}.step:not(:last-child):after{display:none}.news-item{grid-template-columns:75px 1fr auto;gap:10px}.news-item p{white-space:normal}.cta-inner{display:block}.cta h2{font-size:27px;margin-bottom:22px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:span 2}.copyright{display:block}.copyright span{display:block;margin-top:7px}
}
@media(max-width:520px){
 .hero h1{font-size:32px}.hero-note{gap:9px;display:grid}.download-preview{padding:19px}.app-screen{height:145px}.preview-info{gap:8px}.feature-list,.steps{grid-template-columns:1fr}.feature-panel{min-height:auto;padding:25px}.news-item{grid-template-columns:1fr auto}.news-date{grid-column:span 2}.news-item h3{font-size:15px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.quick-item strong{font-size:13px}.quick-item span{font-size:10px}
}

/* roulang page: article */
:root{
      --ink:#17151a;
      --ink-2:#211d25;
      --panel:#29242d;
      --panel-2:#332c37;
      --paper:#f5f1ea;
      --paper-2:#ebe5dc;
      --amber:#f5a623;
      --amber-2:#ffc45b;
      --mint:#8de0bf;
      --wine:#8f4059;
      --text:#f8f4ed;
      --muted:#bcb2b8;
      --dark-text:#302a31;
      --dark-muted:#706770;
      --line:rgba(255,255,255,.13);
      --line-dark:rgba(48,42,49,.14);
      --radius:18px;
      --radius-sm:11px;
      --shadow:0 18px 45px rgba(10,8,12,.22);
      --ease:all .25s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;
      background:var(--paper);
      color:var(--dark-text);
      line-height:1.75;
      -webkit-font-smoothing:antialiased
    }
    a{color:inherit;text-decoration:none}
    a:hover{text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button{font:inherit;border:0;cursor:pointer}
    :focus-visible{outline:3px solid var(--mint);outline-offset:3px}
    .container{width:min(1160px,calc(100% - 40px));margin:0 auto}
    .site-header{
      height:76px;background:var(--ink);color:var(--text);position:sticky;top:0;z-index:20;
      border-bottom:1px solid var(--line)
    }
    .header-inner{height:100%;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;min-width:238px}
    .logo-mark{
      width:34px;height:34px;border-radius:9px;background:var(--amber);color:var(--ink);
      display:grid;place-items:center;font-weight:900;font-size:18px;box-shadow:4px 4px 0 var(--wine)
    }
    .logo-text{font-size:17px;font-weight:800;letter-spacing:.01em}
    .logo-text small{
      display:block;color:var(--amber-2);font-size:10px;line-height:1.2;
      letter-spacing:.14em;text-transform:uppercase
    }
    .main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
    .main-nav a{
      padding:10px 13px;color:#d8d0d2;font-size:14px;border-radius:8px;transition:var(--ease)
    }
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{
      color:var(--amber-2);background:rgba(245,166,35,.1)
    }
    .header-download{
      padding:11px 17px;background:var(--amber);color:var(--ink);font-size:14px;
      font-weight:800;border-radius:9px;transition:var(--ease);white-space:nowrap
    }
    .header-download:hover{background:var(--amber-2);transform:translateY(-2px)}
    .menu-toggle{display:none;background:transparent;color:var(--text);font-size:25px}
    .article-hero{
      background:var(--ink);color:var(--text);padding:68px 0 72px;position:relative;overflow:hidden
    }
    .article-hero:before{
      content:"";position:absolute;width:440px;height:440px;border:1px solid rgba(245,166,35,.2);
      border-radius:50%;right:-145px;top:-230px
    }
    .article-hero:after{
      content:"";position:absolute;width:180px;height:180px;background:var(--wine);
      opacity:.22;transform:rotate(32deg);right:18%;bottom:-125px
    }
    .hero-inner{position:relative;z-index:1;max-width:900px}
    .breadcrumb{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap;color:var(--muted);
      font-size:13px;margin-bottom:24px
    }
    .breadcrumb a{color:var(--amber-2);transition:var(--ease)}
    .breadcrumb a:hover{color:var(--mint);text-decoration:underline}
    .breadcrumb .divider{color:#756b72}
    .article-label{
      display:inline-flex;align-items:center;gap:9px;color:var(--amber-2);
      font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:17px
    }
    .article-label:before{content:"";width:25px;height:2px;background:var(--amber)}
    .article-hero h1{
      max-width:880px;margin:0 0 22px;font-size:clamp(32px,5vw,58px);
      line-height:1.2;letter-spacing:-.04em
    }
    .article-summary{max-width:760px;color:#c9c0c3;font-size:17px;margin:0 0 27px}
    .article-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;color:var(--muted);font-size:13px}
    .meta-chip{
      border:1px solid rgba(141,224,191,.4);color:var(--mint);border-radius:6px;
      padding:4px 9px;line-height:1.4
    }
    .article-main{padding:70px 0 90px}
    .article-layout{display:grid;grid-template-columns:minmax(0,780px) 280px;gap:48px;align-items:start}
    .reading-card{
      background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius);
      box-shadow:0 12px 35px rgba(48,42,49,.07);padding:clamp(26px,5vw,58px)
    }
    .article-content{font-size:16px;color:var(--dark-text);line-height:2}
    .article-content h2{
      font-size:30px;line-height:1.35;margin:38px 0 17px;color:var(--ink);
      padding-left:15px;border-left:4px solid var(--amber)
    }
    .article-content h3{font-size:22px;line-height:1.45;margin:30px 0 12px;color:var(--ink)}
    .article-content p{margin:0 0 20px}
    .article-content strong{color:var(--ink);font-weight:800}
    .article-content ul,.article-content ol{padding-left:27px;margin:12px 0 24px}
    .article-content li{margin:7px 0}
    .article-content blockquote{
      margin:27px 0;padding:20px 23px;background:#fff8e9;border-left:4px solid var(--amber);
      color:#665333;border-radius:0 var(--radius-sm) var(--radius-sm) 0
    }
    .article-content table{width:100%;border-collapse:collapse;margin:26px 0;font-size:14px}
    .article-content th,.article-content td{border:1px solid var(--line-dark);padding:11px 13px;text-align:left}
    .article-content th{background:var(--paper-2);font-weight:800}
    .article-content img{border-radius:var(--radius-sm);margin:25px auto}
    .empty-state{
      text-align:center;padding:45px 20px;background:var(--paper);
      border:1px dashed rgba(48,42,49,.25);border-radius:var(--radius-sm)
    }
    .empty-state h2{border:0;padding:0;margin:0 0 10px;font-size:25px}
    .empty-state p{color:var(--dark-muted);margin-bottom:22px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;
      border-radius:9px;font-weight:800;font-size:14px;transition:var(--ease);
      border:1px solid transparent
    }
    .btn-primary{background:var(--amber);color:var(--ink)}
    .btn-primary:hover,.btn-primary:focus{
      background:var(--amber-2);transform:translateY(-2px);box-shadow:0 8px 18px rgba(245,166,35,.2)
    }
    .btn-outline{border-color:rgba(48,42,49,.28);color:var(--ink)}
    .btn-outline:hover,.btn-outline:focus{
      border-color:var(--wine);color:var(--wine);background:rgba(143,64,89,.07)
    }
    .article-aside{position:sticky;top:101px}
    .aside-card{
      background:var(--ink-2);color:var(--text);border-radius:var(--radius);
      padding:25px 23px;margin-bottom:17px;box-shadow:var(--shadow)
    }
    .aside-card h2{font-size:18px;margin:0 0 17px}
    .aside-card p{font-size:13px;color:var(--muted);margin:0 0 19px}
    .aside-card .btn{width:100%;margin-top:4px}
    .aside-list{list-style:none;padding:0;margin:0}
    .aside-list li{border-top:1px solid var(--line);padding:11px 0;font-size:13px;color:#d9d0d2}
    .aside-list li:first-child{border-top:0;padding-top:0}
    .aside-list a{transition:var(--ease)}
    .aside-list a:hover{color:var(--amber-2)}
    .related-section{background:var(--paper-2);padding:68px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:25px}
    .section-kicker{color:var(--wine);font-weight:900;font-size:13px;letter-spacing:.08em}
    .section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.3;margin:6px 0 0;letter-spacing:-.03em}
    .section-intro{max-width:430px;color:var(--dark-muted);font-size:14px;margin:0}
    .related-row{
      background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius-sm);
      padding:20px 23px;display:flex;justify-content:space-between;gap:20px;align-items:center;
      transition:var(--ease);margin-bottom:10px
    }
    .related-row:hover{border-color:rgba(245,166,35,.7);transform:translateX(4px);box-shadow:0 8px 20px rgba(48,42,49,.07)}
    .related-info{min-width:0}
    .related-info h3{font-size:17px;margin:0 0 4px;line-height:1.45}
    .related-info p{color:var(--dark-muted);font-size:13px;margin:0}
    .related-arrow{font-size:22px;color:var(--wine);flex:0 0 auto}
    .cta-section{background:var(--ink-2);color:var(--text);padding:62px 0}
    .cta-box{
      border:1px solid rgba(245,166,35,.38);border-radius:var(--radius);padding:35px 40px;
      display:flex;align-items:center;justify-content:space-between;gap:25px;
      background:linear-gradient(105deg,rgba(245,166,35,.08),rgba(143,64,89,.13))
    }
    .cta-box h2{font-size:clamp(25px,3vw,36px);margin:0 0 8px;line-height:1.35}
    .cta-box p{color:var(--muted);font-size:14px;margin:0}
    .site-footer{background:var(--ink);color:var(--text);padding:54px 0 20px;border-top:1px solid var(--line)}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:45px;padding-bottom:40px}
    .footer-brand p{color:var(--muted);font-size:13px;max-width:300px;margin:17px 0 0}
    .footer-title{font-size:13px;color:var(--amber-2);font-weight:800;margin:5px 0 15px}
    .footer-links{display:flex;flex-direction:column;gap:9px;color:#d2c9cc;font-size:13px}
    .footer-links a{transition:var(--ease)}
    .footer-links a:hover{color:var(--mint);padding-left:3px}
    .copyright{
      border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;
      gap:15px;flex-wrap:wrap;color:#93898e;font-size:12px
    }
    .copyright a{color:var(--amber-2)}
    @media(max-width:1024px){
      .header-inner{gap:14px}.logo{min-width:205px}
      .main-nav a{padding:9px 8px;font-size:13px}
      .article-layout{grid-template-columns:minmax(0,1fr) 245px;gap:28px}
    }
    @media(max-width:768px){
      .container{width:min(100% - 32px,620px)}
      .site-header{height:68px}.logo{min-width:0;margin-right:auto}
      .logo-text{font-size:15px}.header-download{padding:9px 12px;font-size:12px}
      .menu-toggle{display:block;order:3;line-height:1}
      .main-nav{
        display:none;position:absolute;top:68px;left:0;right:0;background:var(--ink);
        padding:12px 16px 18px;flex-direction:column;align-items:stretch;border-top:1px solid var(--line);
        box-shadow:0 15px 25px rgba(0,0,0,.2)
      }
      .main-nav.open{display:flex}.main-nav a{padding:13px 14px}
      .article-hero{padding:48px 0 54px}.article-summary{font-size:15px}
      .article-main{padding:40px 0 60px}.article-layout{display:block}
      .article-aside{position:static;margin-top:24px}
      .reading-card{padding:25px 20px}.article-content{font-size:15px;line-height:1.9}
      .article-content h2{font-size:25px;margin-top:31px}
      .article-content h3{font-size:20px}
      .section-head{display:block}.section-intro{margin-top:12px}
      .related-section{padding:48px 0}.cta-section{padding:45px 0}
      .cta-box{display:block;padding:27px 23px}.cta-box .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 28px)}
      .logo-mark{width:31px;height:31px;font-size:16px}.logo-text small{font-size:9px}
      .header-download{display:none}.article-hero h1{font-size:32px}
      .breadcrumb{font-size:12px}.article-meta{font-size:12px}
      .reading-card{border-radius:13px}.article-content table{font-size:12px;display:block;overflow-x:auto;white-space:nowrap}
      .related-row{padding:16px;align-items:flex-start}.related-arrow{font-size:19px}
      .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
      .copyright{display:block}.copyright a{display:inline-block;margin-top:7px}
    }

/* roulang page: category1 */
:root{
      --ink:#17151a;
      --ink-2:#211d25;
      --panel:#29242d;
      --panel-2:#332c37;
      --paper:#f5f1ea;
      --paper-2:#ebe5dc;
      --amber:#f5a623;
      --amber-2:#ffc45b;
      --mint:#8de0bf;
      --wine:#8f4059;
      --text:#f8f4ed;
      --muted:#bcb2b8;
      --dark-text:#302a31;
      --dark-muted:#706770;
      --line:rgba(255,255,255,.13);
      --line-dark:rgba(48,42,49,.14);
      --radius:18px;
      --radius-sm:11px;
      --shadow:0 18px 45px rgba(10,8,12,.22);
      --ease:all .25s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;background:var(--paper);color:var(--dark-text);line-height:1.75}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit;border:0;cursor:pointer}
    :focus-visible{outline:3px solid var(--mint);outline-offset:3px}
    .container{width:min(1160px,calc(100% - 40px));margin:0 auto}
    .site-header{height:76px;background:var(--ink);color:var(--text);position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line)}
    .header-inner{height:100%;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;min-width:238px}
    .logo-mark{width:34px;height:34px;border-radius:9px;background:var(--amber);color:var(--ink);display:grid;place-items:center;font-weight:900;font-size:18px;box-shadow:4px 4px 0 var(--wine)}
    .logo-text{font-size:17px;font-weight:800;letter-spacing:.01em}
    .logo-text small{display:block;color:var(--amber-2);font-size:10px;line-height:1.2;letter-spacing:.14em;text-transform:uppercase}
    .main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
    .main-nav a{padding:10px 13px;color:#d8d0d2;font-size:14px;border-radius:8px;transition:var(--ease)}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--amber-2);background:rgba(245,166,35,.1)}
    .header-download{padding:11px 17px;background:var(--amber);color:var(--ink);font-size:14px;font-weight:800;border-radius:9px;transition:var(--ease);white-space:nowrap}
    .header-download:hover{background:var(--amber-2);transform:translateY(-2px)}
    .menu-toggle{display:none;background:transparent;color:var(--text);font-size:25px}
    .page-hero{background:var(--ink);color:var(--text);padding:72px 0 76px;position:relative;overflow:hidden}
    .page-hero:before{content:"";position:absolute;width:430px;height:430px;border:1px solid rgba(245,166,35,.22);border-radius:50%;right:-160px;top:-235px}
    .page-hero:after{content:"PG";position:absolute;right:11%;bottom:-44px;color:rgba(245,166,35,.08);font-size:190px;font-weight:900;line-height:1}
    .hero-content{position:relative;z-index:1;max-width:800px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--amber-2);font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:16px}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--amber)}
    .page-hero h1{font-size:clamp(34px,5vw,60px);line-height:1.18;letter-spacing:-.04em;margin:0 0 20px}
    .page-hero h1 span{color:var(--amber-2)}
    .hero-copy{font-size:17px;color:#c9c0c3;max-width:700px;margin:0 0 25px}
    .breadcrumb{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:13px;flex-wrap:wrap}
    .breadcrumb a:hover{color:var(--amber-2)}
    .breadcrumb .current{color:var(--amber-2)}
    .section{padding:84px 0}
    .section-light{background:var(--paper)}
    .section-soft{background:var(--paper-2)}
    .section-dark{background:var(--ink-2);color:var(--text)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}
    .section-kicker{color:var(--wine);font-weight:900;font-size:13px;letter-spacing:.08em}
    .section-dark .section-kicker{color:var(--mint)}
    .section h2{font-size:clamp(27px,3vw,40px);line-height:1.25;margin:7px 0 0;letter-spacing:-.03em}
    .section-intro{max-width:500px;color:var(--dark-muted);font-size:15px;margin:0}
    .section-dark .section-intro{color:var(--muted)}
    .feature-focus{display:grid;grid-template-columns:.82fr 1.18fr;gap:28px;align-items:stretch}
    .focus-panel{background:var(--ink);color:var(--text);border-radius:var(--radius);padding:36px;position:relative;overflow:hidden;box-shadow:var(--shadow)}
    .focus-panel:after{content:"PGemulator";position:absolute;right:-35px;bottom:16px;color:rgba(245,166,35,.1);font-size:46px;font-weight:900;transform:rotate(-12deg)}
    .panel-label{color:var(--mint);font-size:12px;font-weight:800;letter-spacing:.1em}
    .focus-panel h3{font-size:28px;line-height:1.3;margin:14px 0}
    .focus-panel p{color:var(--muted);font-size:14px;position:relative;z-index:1}
    .tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:24px;position:relative;z-index:1}
    .tag{font-size:11px;padding:5px 9px;border:1px solid rgba(141,224,191,.45);color:var(--mint);border-radius:5px}
    .feature-stack{display:grid;gap:14px}
    .feature-row{background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius-sm);padding:22px 24px;display:grid;grid-template-columns:54px 1fr auto;gap:18px;align-items:start;transition:var(--ease)}
    .feature-row:hover{transform:translateX(5px);border-color:rgba(245,166,35,.65);box-shadow:0 12px 28px rgba(48,42,49,.1)}
    .feature-icon{width:42px;height:42px;border-radius:10px;background:#fff1d5;color:#a46200;display:grid;place-items:center;font-weight:900;font-size:17px}
    .feature-row h3{font-size:18px;margin:0 0 5px}
    .feature-row p{font-size:13px;color:var(--dark-muted);margin:0}
    .status{font-size:11px;padding:5px 8px;border-radius:5px;color:#24644d;background:#d9f3e8;white-space:nowrap}
    .detail-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .detail-card{background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius);padding:28px;transition:var(--ease)}
    .detail-card:hover{box-shadow:0 13px 28px rgba(48,42,49,.1);transform:translateY(-3px)}
    .detail-card h3{font-size:21px;margin:0 0 10px}
    .detail-card p{font-size:14px;color:var(--dark-muted);margin:0 0 15px}
    .detail-card ul{padding:0;margin:0;list-style:none}
    .detail-card li{font-size:13px;padding:8px 0;border-top:1px solid var(--line-dark)}
    .detail-card li:before{content:"✓";color:#a46200;font-weight:900;margin-right:9px}
    .info-band{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:stretch}
    .explain-box{background:#fff;border-radius:var(--radius);padding:34px;border:1px solid var(--line-dark)}
    .explain-box h3{font-size:25px;margin:0 0 14px}
    .explain-box p{color:var(--dark-muted);font-size:14px}
    .setting-list{display:grid;gap:10px;margin-top:20px}
    .setting-item{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-top:1px solid var(--line-dark)}
    .setting-number{color:var(--wine);font-weight:900;font-size:18px;line-height:1.4}
    .setting-item strong{display:block;font-size:14px}
    .setting-item span{font-size:12px;color:var(--dark-muted)}
    .notice{background:var(--ink-2);border-left:4px solid var(--amber);color:var(--text);border-radius:var(--radius);padding:30px}
    .notice h3{font-size:23px;margin:0 0 12px}
    .notice p{font-size:14px;color:var(--muted);margin:0 0 18px}
    .notice a{color:var(--amber-2);font-weight:800;font-size:14px}
    .notice a:hover{text-decoration:underline}
    .guide-cta{background:var(--amber);color:var(--ink);border-radius:var(--radius);padding:36px 42px;display:flex;align-items:center;justify-content:space-between;gap:25px;box-shadow:var(--shadow)}
    .guide-cta h2{font-size:30px;margin:0 0 8px;line-height:1.25}
    .guide-cta p{margin:0;color:#59421d;font-size:14px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:9px;font-weight:800;font-size:14px;transition:var(--ease);border:1px solid transparent}
    .btn-primary{background:var(--amber);color:var(--ink)}
    .btn-primary:hover,.btn-primary:focus{background:var(--amber-2);transform:translateY(-2px);box-shadow:0 8px 18px rgba(245,166,35,.2)}
    .btn-dark{background:var(--ink);color:var(--text)}
    .btn-dark:hover{background:var(--panel-2);transform:translateY(-2px)}
    .faq-list{max-width:850px;margin:0 auto}
    .faq-item{background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden}
    .faq-question{width:100%;padding:20px 23px;background:transparent;color:var(--dark-text);display:flex;justify-content:space-between;align-items:center;text-align:left;font-weight:800;font-size:15px}
    .faq-question:hover{color:#a46200;background:#fffaf1}
    .faq-symbol{font-size:23px;color:var(--wine);transition:var(--ease)}
    .faq-answer{display:none;padding:0 23px 21px;color:var(--dark-muted);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-symbol{transform:rotate(45deg);color:var(--amber)}
    .site-footer{background:var(--ink);color:var(--text);padding:55px 0 20px;border-top:1px solid var(--line)}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:45px;padding-bottom:38px}
    .footer-brand p{color:var(--muted);font-size:13px;max-width:280px;margin:18px 0 0}
    .footer-title{font-size:13px;font-weight:900;color:var(--amber-2);margin-bottom:14px}
    .footer-links{display:grid;gap:8px;color:var(--muted);font-size:13px}
    .footer-links a{transition:var(--ease)}
    .footer-links a:hover{color:var(--mint);padding-left:3px}
    .copyright{border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#8f878b;font-size:11px}
    .copyright a{color:#b7aaa9}
    .copyright a:hover{color:var(--amber-2)}
    @media(max-width:900px){
      .main-nav{gap:2px}
      .main-nav a{padding:9px 8px}
      .header-download{padding:10px 12px}
      .feature-focus,.info-band{grid-template-columns:1fr}
    }
    @media(max-width:768px){
      .site-header{height:68px}
      .header-inner{gap:12px}
      .logo{min-width:0;flex:1}
      .logo-text{font-size:15px}
      .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--ink);padding:12px 20px 18px;flex-direction:column;align-items:stretch;border-bottom:1px solid var(--line)}
      .main-nav.open{display:flex}
      .main-nav a{padding:12px 14px}
      .menu-toggle{display:block}
      .header-download{font-size:12px;padding:9px 11px}
      .page-hero{padding:55px 0 60px}
      .section{padding:62px 0}
      .section-head{display:block}
      .section-intro{margin-top:14px}
      .feature-row{grid-template-columns:45px 1fr}
      .feature-row .status{grid-column:2;justify-self:start}
      .detail-grid{grid-template-columns:1fr}
      .guide-cta{display:block;padding:30px 25px}
      .guide-cta .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
      .footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      .container{width:min(100% - 28px,1160px)}
      .logo-mark{width:30px;height:30px;font-size:15px}
      .logo-text small{font-size:8px}
      .page-hero h1{font-size:35px}
      .hero-copy{font-size:15px}
      .focus-panel,.explain-box,.notice{padding:25px}
      .feature-row{padding:18px}
      .feature-row h3{font-size:16px}
      .copyright{display:block}
      .copyright a{display:inline-block;margin-top:7px}
      .footer-grid{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
    }

/* roulang page: category2 */
:root{
      --ink:#17151a;--ink-2:#211d25;--panel:#29242d;--panel-2:#332c37;
      --paper:#f5f1ea;--paper-2:#ebe5dc;--amber:#f5a623;--amber-2:#ffc45b;
      --mint:#8de0bf;--wine:#8f4059;--text:#f8f4ed;--muted:#bcb2b8;
      --dark-text:#302a31;--dark-muted:#706770;--line:rgba(255,255,255,.13);
      --line-dark:rgba(48,42,49,.14);--radius:18px;--radius-sm:11px;
      --shadow:0 18px 45px rgba(10,8,12,.22);--ease:all .25s ease
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;background:var(--paper);color:var(--dark-text);line-height:1.75}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid var(--mint);outline-offset:3px}
    button{font:inherit;border:0;cursor:pointer}
    img{max-width:100%;display:block}
    .container{width:min(1160px,calc(100% - 40px));margin:0 auto}
    .site-header{height:76px;background:var(--ink);color:var(--text);position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line)}
    .header-inner{height:100%;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;min-width:238px}
    .logo-mark{width:34px;height:34px;border-radius:9px;background:var(--amber);color:var(--ink);display:grid;place-items:center;font-weight:900;font-size:18px;box-shadow:4px 4px 0 var(--wine)}
    .logo-text{font-size:17px;font-weight:800;letter-spacing:.01em}
    .logo-text small{display:block;color:var(--amber-2);font-size:10px;line-height:1.2;letter-spacing:.14em;text-transform:uppercase}
    .main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
    .main-nav a{padding:10px 13px;color:#d8d0d2;font-size:14px;border-radius:8px;transition:var(--ease)}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--amber-2);background:rgba(245,166,35,.1)}
    .header-download{padding:11px 17px;background:var(--amber);color:var(--ink);font-size:14px;font-weight:800;border-radius:9px;transition:var(--ease);white-space:nowrap}
    .header-download:hover{background:var(--amber-2);transform:translateY(-2px)}
    .menu-toggle{display:none;background:transparent;color:var(--text);font-size:25px}
    .hero{background:var(--ink);color:var(--text);position:relative;overflow:hidden;padding:76px 0 82px}
    .hero:before{content:"";position:absolute;width:430px;height:430px;border:1px solid rgba(245,166,35,.22);border-radius:50%;right:-130px;top:-190px}
    .hero:after{content:"PGemulator";position:absolute;right:5%;bottom:-25px;color:rgba(245,166,35,.08);font-size:86px;font-weight:900;transform:rotate(-8deg)}
    .hero-inner{position:relative;z-index:1;max-width:850px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--amber-2);font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:17px}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--amber)}
    .hero h1{font-size:clamp(34px,5vw,58px);line-height:1.18;letter-spacing:-.04em;margin:0 0 22px}
    .hero h1 span{color:var(--amber-2)}
    .hero-copy{font-size:17px;color:#c9c0c3;max-width:700px;margin:0 0 30px}
    .breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-top:27px}
    .breadcrumb a:hover{color:var(--amber-2)}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:9px;font-weight:800;font-size:14px;transition:var(--ease);border:1px solid transparent}
    .btn-primary{background:var(--amber);color:var(--ink)}
    .btn-primary:hover{background:var(--amber-2);transform:translateY(-2px);box-shadow:0 8px 18px rgba(245,166,35,.2)}
    .btn-outline{border-color:rgba(255,255,255,.3);color:var(--text);margin-left:10px}
    .btn-outline:hover{border-color:var(--mint);color:var(--mint);background:rgba(141,224,191,.08)}
    .section{padding:82px 0}
    .section-dark{background:var(--ink-2);color:var(--text)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:31px}
    .section-kicker{color:var(--wine);font-weight:900;font-size:13px;letter-spacing:.08em}
    .section-dark .section-kicker{color:var(--mint)}
    .section h2{font-size:clamp(27px,3vw,40px);line-height:1.25;margin:7px 0 0;letter-spacing:-.03em}
    .section-intro{max-width:500px;color:var(--dark-muted);font-size:15px;margin:0}
    .section-dark .section-intro{color:var(--muted)}
    .guide-layout{display:grid;grid-template-columns:270px 1fr;gap:42px;align-items:start}
    .step-index{position:sticky;top:100px;background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius);padding:14px}
    .step-index a{display:flex;gap:12px;align-items:center;padding:14px 13px;border-radius:9px;font-size:14px;color:var(--dark-muted);transition:var(--ease)}
    .step-index a:hover,.step-index a.active{background:#fff1d5;color:#9a5c00;font-weight:800}
    .step-index b{width:27px;height:27px;display:grid;place-items:center;background:var(--paper-2);border-radius:7px;font-size:12px}
    .step-index a.active b{background:var(--amber);color:var(--ink)}
    .guide-content{display:grid;gap:16px}
    .guide-step{background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius);padding:27px 30px;display:grid;grid-template-columns:58px 1fr;gap:19px;transition:var(--ease)}
    .guide-step:hover{box-shadow:0 12px 28px rgba(48,42,49,.1);transform:translateY(-3px)}
    .step-number{width:48px;height:48px;border-radius:12px;background:var(--ink);color:var(--amber-2);display:grid;place-items:center;font-size:20px;font-weight:900}
    .guide-step h3{font-size:21px;margin:0 0 8px}
    .guide-step p{font-size:14px;color:var(--dark-muted);margin:0}
    .tip{margin-top:14px;padding:11px 14px;border-left:3px solid var(--amber);background:#fff8e9;color:#655846;font-size:13px}
    .tip strong{color:#9a5c00}
    .prep-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .dark-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:28px;min-height:205px}
    .dark-card h3{margin:0 0 10px;font-size:21px}
    .dark-card p{color:var(--muted);font-size:14px;margin:0}
    .check-list{list-style:none;padding:0;margin:18px 0 0}
    .check-list li{margin:8px 0;color:#ddd3d5;font-size:14px}
    .check-list li:before{content:"✓";color:var(--mint);font-weight:900;margin-right:10px}
    .notice{display:flex;gap:17px;align-items:flex-start;background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius);padding:25px}
    .notice-icon{width:40px;height:40px;border-radius:9px;background:#fff1d5;color:#a46200;display:grid;place-items:center;font-weight:900;flex:none}
    .notice h3{font-size:19px;margin:0 0 6px}
    .notice p{font-size:14px;color:var(--dark-muted);margin:0}
    .faq-list{max-width:860px;margin:0 auto}
    .faq-item{background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;background:#fff;color:var(--dark-text);padding:19px 22px;font-weight:800}
    .faq-question:hover{color:#9a5c00;background:#fffaf2}
    .faq-question span:last-child{font-size:23px;color:var(--amber);transition:var(--ease)}
    .faq-answer{display:none;padding:0 22px 20px;color:var(--dark-muted);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta{background:var(--wine);color:#fff;padding:55px 0}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .cta h2{font-size:clamp(25px,3vw,37px);margin:0 0 8px}
    .cta p{color:#ead9de;margin:0;font-size:15px}
    .cta .btn-primary{margin-top:18px}
    .site-footer{background:var(--ink);color:var(--text);padding:53px 0 20px;border-top:1px solid var(--line)}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:45px;padding-bottom:40px}
    .footer-brand p{color:var(--muted);font-size:13px;max-width:300px;margin:17px 0 0}
    .footer-title{font-size:14px;font-weight:800;color:var(--amber-2);margin-bottom:14px}
    .footer-links{display:grid;gap:8px;color:var(--muted);font-size:13px}
    .footer-links a:hover{color:var(--mint)}
    .copyright{border-top:1px solid var(--line);padding-top:19px;display:flex;justify-content:space-between;gap:15px;color:#968c93;font-size:12px}
    .copyright a{color:var(--amber-2)}
    @media(max-width:900px){
      .main-nav a{padding:9px 8px}.logo{min-width:205px}.guide-layout{grid-template-columns:220px 1fr;gap:25px}
    }
    @media(max-width:768px){
      .container{width:min(100% - 30px,600px)}.site-header{height:68px}.header-inner{gap:12px}
      .logo{min-width:0;flex:1}.logo-text{font-size:15px}.main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--ink);padding:12px 15px 18px;border-top:1px solid var(--line);flex-direction:column;align-items:stretch}
      .main-nav.show{display:flex}.main-nav a{padding:13px 14px}.menu-toggle{display:block}.header-download{padding:10px 12px;font-size:12px}
      .hero{padding:58px 0 60px}.hero h1{font-size:38px}.hero-copy{font-size:15px}.btn{width:100%}.btn-outline{margin:10px 0 0}
      .section{padding:62px 0}.section-head{display:block}.section-intro{margin-top:12px}.guide-layout{display:block}.step-index{position:static;display:flex;overflow:auto;margin-bottom:20px;padding:8px}.step-index a{min-width:132px;padding:10px;font-size:12px}.guide-step{grid-template-columns:45px 1fr;padding:22px 18px;gap:14px}.step-number{width:40px;height:40px;font-size:17px}
      .prep-grid{grid-template-columns:1fr}.cta-inner{display:block}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:1/-1}.copyright{display:block}.copyright a{display:inline-block;margin-top:8px}
    }
    @media(max-width:390px){.logo-text small{font-size:8px}.header-download{display:none}.hero h1{font-size:33px}.guide-step h3{font-size:18px}}

/* roulang page: category3 */
:root{
      --ink:#17151a;
      --ink-2:#211d25;
      --panel:#29242d;
      --panel-2:#332c37;
      --paper:#f5f1ea;
      --paper-2:#ebe5dc;
      --amber:#f5a623;
      --amber-2:#ffc45b;
      --mint:#8de0bf;
      --wine:#8f4059;
      --text:#f8f4ed;
      --muted:#bcb2b8;
      --dark-text:#302a31;
      --dark-muted:#706770;
      --line:rgba(255,255,255,.13);
      --line-dark:rgba(48,42,49,.14);
      --radius:18px;
      --radius-sm:11px;
      --shadow:0 18px 45px rgba(10,8,12,.22);
      --ease:all .25s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;background:var(--paper);color:var(--dark-text);line-height:1.75}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid var(--mint);outline-offset:3px}
    img{max-width:100%;display:block}
    button{font:inherit;border:0;cursor:pointer}
    .container{width:min(1160px,calc(100% - 40px));margin:0 auto}
    .site-header{height:76px;background:var(--ink);color:var(--text);position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line)}
    .header-inner{height:100%;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;min-width:238px}
    .logo-mark{width:34px;height:34px;border-radius:9px;background:var(--amber);color:var(--ink);display:grid;place-items:center;font-weight:900;font-size:18px;box-shadow:4px 4px 0 var(--wine)}
    .logo-text{font-size:17px;font-weight:800;letter-spacing:.01em}
    .logo-text small{display:block;color:var(--amber-2);font-size:10px;line-height:1.2;letter-spacing:.14em}
    .main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
    .main-nav a{padding:10px 13px;color:#d8d0d2;font-size:14px;border-radius:8px;transition:var(--ease)}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:var(--amber-2);background:rgba(245,166,35,.1)}
    .header-download{padding:11px 17px;background:var(--amber);color:var(--ink);font-size:14px;font-weight:800;border-radius:9px;transition:var(--ease);white-space:nowrap}
    .header-download:hover{background:var(--amber-2);transform:translateY(-2px)}
    .menu-toggle{display:none;background:transparent;color:var(--text);font-size:25px}
    .page-hero{background:var(--ink);color:var(--text);padding:70px 0 78px;position:relative;overflow:hidden}
    .page-hero:before{content:"";position:absolute;width:420px;height:420px;border:1px solid rgba(245,166,35,.2);border-radius:50%;right:-130px;top:-180px}
    .page-hero:after{content:"PGemulator";position:absolute;right:8%;bottom:-28px;color:rgba(245,166,35,.08);font-size:clamp(50px,9vw,130px);font-weight:900;transform:rotate(-8deg)}
    .hero-content{position:relative;z-index:1;max-width:760px}
    .eyebrow,.section-kicker{color:var(--amber-2);font-weight:900;font-size:13px;letter-spacing:.08em}
    .eyebrow:before{content:"";display:inline-block;width:24px;height:2px;background:var(--amber);vertical-align:middle;margin-right:9px}
    .page-hero h1{font-size:clamp(34px,5vw,62px);line-height:1.18;letter-spacing:-.045em;margin:17px 0 20px}
    .page-hero h1 span{color:var(--amber-2)}
    .page-hero p{color:#c9c0c3;font-size:17px;max-width:670px;margin:0}
    .breadcrumb{display:flex;gap:9px;flex-wrap:wrap;align-items:center;margin-top:27px;color:var(--muted);font-size:13px}
    .breadcrumb a:hover{color:var(--amber-2)}
    .breadcrumb strong{color:var(--text);font-weight:600}
    .section{padding:84px 0}
    .section-dark{background:var(--ink-2);color:var(--text)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:32px}
    .section h2{font-size:clamp(27px,3vw,40px);line-height:1.25;margin:8px 0 0;letter-spacing:-.03em}
    .section-intro{max-width:510px;color:var(--dark-muted);font-size:15px;margin:0}
    .section-dark .section-intro{color:var(--muted)}
    .download-layout{display:grid;grid-template-columns:1fr .92fr;gap:30px;align-items:stretch}
    .download-copy{background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius);padding:40px;box-shadow:0 8px 24px rgba(48,42,49,.05)}
    .download-copy h2{margin-bottom:17px}
    .download-copy p{color:var(--dark-muted);margin:0 0 24px}
    .status-row{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}
    .tag{font-size:12px;padding:6px 10px;border:1px solid rgba(143,64,89,.3);color:var(--wine);border-radius:6px;background:#fff8f5}
    .tag.mint{border-color:rgba(36,100,77,.28);color:#24644d;background:#e9f8f0}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 21px;border-radius:9px;font-weight:800;font-size:14px;transition:var(--ease);border:1px solid transparent}
    .btn-primary{background:var(--amber);color:var(--ink)}
    .btn-primary:hover,.btn-primary:focus{background:var(--amber-2);transform:translateY(-2px);box-shadow:0 8px 18px rgba(245,166,35,.2)}
    .btn-outline{border-color:rgba(48,42,49,.3);color:var(--dark-text)}
    .btn-outline:hover,.btn-outline:focus{border-color:var(--wine);color:var(--wine);background:#fff}
    .button-row{display:flex;gap:12px;flex-wrap:wrap}
    .download-card{background:var(--ink);border-radius:var(--radius);padding:34px;color:var(--text);position:relative;overflow:hidden;box-shadow:var(--shadow)}
    .download-card:before{content:"";position:absolute;inset:18px;border:1px solid rgba(245,166,35,.25);border-radius:12px;pointer-events:none}
    .app-display{position:relative;z-index:1;min-height:330px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}
    .app-icon{width:88px;height:88px;border-radius:23px;background:var(--amber);color:var(--ink);display:grid;place-items:center;font-size:31px;font-weight:900;box-shadow:9px 9px 0 var(--wine);margin-bottom:24px}
    .app-display h3{font-size:27px;margin:0 0 7px}
    .app-display p{color:var(--muted);font-size:13px;margin:0 0 24px}
    .app-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;width:100%;max-width:390px;background:var(--line);margin-top:25px}
    .app-meta div{background:rgba(255,255,255,.06);padding:12px 7px}
    .app-meta b{display:block;color:var(--amber-2);font-size:14px}
    .app-meta span{font-size:11px;color:var(--muted)}
    .notice{margin-top:20px;padding:17px 19px;border-left:3px solid var(--amber);background:#fff7e8;color:var(--dark-muted);font-size:13px;border-radius:0 9px 9px 0}
    .timeline{position:relative;max-width:860px;margin:0 auto}
    .timeline:before{content:"";position:absolute;left:19px;top:8px;bottom:8px;width:1px;background:rgba(245,166,35,.4)}
    .timeline-item{display:grid;grid-template-columns:40px 1fr;gap:22px;position:relative;padding-bottom:28px}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-dot{width:39px;height:39px;border-radius:50%;background:var(--amber);color:var(--ink);display:grid;place-items:center;font-weight:900;z-index:1}
    .timeline-body{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);padding:22px 25px}
    .timeline-body h3{font-size:19px;margin:0 0 7px}
    .timeline-body p{font-size:14px;color:var(--muted);margin:0}
    .timeline-meta{display:flex;gap:12px;align-items:center;color:var(--mint);font-size:12px;margin-bottom:6px}
    .scene-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:30px;align-items:center}
    .scene-visual{min-height:300px;border-radius:var(--radius);background:var(--panel-2);position:relative;overflow:hidden;padding:28px;display:flex;align-items:end}
    .scene-visual:after{content:"PG";position:absolute;right:22px;top:8px;font-size:150px;font-weight:900;color:rgba(245,166,35,.1)}
    .screen-lines{width:82%;position:relative;z-index:1}
    .screen-line{height:13px;background:rgba(255,255,255,.16);border-radius:3px;margin:12px 0}
    .screen-line:first-child{width:72%;background:var(--amber)}
    .screen-line:nth-child(2){width:94%}
    .screen-line:nth-child(3){width:58%;background:var(--mint)}
    .scene-copy h2{margin-bottom:16px}
    .scene-copy p{color:var(--dark-muted);margin-bottom:21px}
    .check-list{list-style:none;margin:0;padding:0}
    .check-list li{margin:11px 0;font-size:14px}
    .check-list li:before{content:"✓";color:var(--wine);font-weight:900;margin-right:10px}
    .faq-list{max-width:900px;margin:0 auto}
    .faq-item{border-bottom:1px solid var(--line-dark)}
    .faq-question{width:100%;display:flex;justify-content:space-between;gap:20px;text-align:left;background:transparent;color:var(--dark-text);padding:22px 4px;font-weight:800;font-size:16px}
    .faq-question:hover{color:var(--wine)}
    .faq-icon{color:var(--amber);font-size:23px;line-height:1;transition:transform .25s ease}
    .faq-answer{max-height:0;overflow:hidden;color:var(--dark-muted);font-size:14px;transition:max-height .3s ease,padding .3s ease}
    .faq-item.open .faq-answer{max-height:180px;padding:0 42px 20px 4px}
    .faq-item.open .faq-icon{transform:rotate(45deg)}
    .cta{background:var(--wine);color:var(--text);padding:52px 0}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta h2{font-size:clamp(25px,3vw,36px);margin:0 0 8px}
    .cta p{color:#e4cbd2;margin:0}
    .site-footer{background:var(--ink);color:var(--text);padding:55px 0 22px;border-top:1px solid var(--line)}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:45px;padding-bottom:42px}
    .footer-brand p{color:var(--muted);font-size:13px;max-width:300px;margin:18px 0 0}
    .footer-title{font-size:13px;color:var(--amber-2);font-weight:800;margin-bottom:15px}
    .footer-links{display:flex;flex-direction:column;gap:9px;color:var(--muted);font-size:13px}
    .footer-links a:hover{color:var(--amber-2);text-decoration:underline;text-underline-offset:4px}
    .copyright{border-top:1px solid var(--line);padding-top:19px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;color:#91888e;font-size:12px}
    .copyright a{color:var(--amber-2)}
    @media(max-width:1024px){
      .header-inner{gap:15px}.logo{min-width:205px}.main-nav a{padding:9px 8px}
      .download-layout,.scene-grid{grid-template-columns:1fr}
    }
    @media(max-width:768px){
      .container{width:min(100% - 30px,600px)}
      .site-header{height:68px}.logo{min-width:0}.logo-text{font-size:15px}.header-download{padding:10px 12px;font-size:12px}
      .menu-toggle{display:block;order:3}.main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--ink);padding:12px 18px 18px;border-top:1px solid var(--line);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}.main-nav a{padding:12px 14px}
      .page-hero{padding:55px 0 62px}.section{padding:62px 0}.download-copy{padding:28px 23px}
      .section-head,.cta-inner{display:block}.section-head .section-intro{margin-top:14px}.cta .button-row{margin-top:24px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      .header-download{display:none}.logo-text small{font-size:8px}.page-hero h1{font-size:36px}
      .download-card{padding:23px 18px}.app-meta{grid-template-columns:1fr}
      .button-row .btn{width:100%}.timeline-item{grid-template-columns:32px 1fr;gap:13px}.timeline:before{left:15px}.timeline-dot{width:31px;height:31px;font-size:12px}
      .timeline-body{padding:17px}.scene-visual{min-height:220px}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright a{display:inline-block;margin-top:8px}
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}