/* roulang page: index */
:root{
  --ink:#17151d;
  --ink-soft:#211e29;
  --panel:#282331;
  --panel-2:#302a3b;
  --paper:#f7f4ef;
  --paper-2:#eeeae3;
  --text:#f8f5ef;
  --dark-text:#26222c;
  --muted:#aaa4b1;
  --muted-dark:#746d79;
  --line:rgba(255,255,255,.12);
  --line-dark:#ded8cf;
  --coral:#ff765f;
  --coral-dark:#df554b;
  --lime:#c8ee72;
  --cyan:#7cddd3;
  --radius:18px;
  --radius-sm:11px;
  --shadow:0 18px 50px rgba(20,16,27,.16);
  --container:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;background:var(--paper);color:var(--dark-text);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{border:0;cursor:pointer}
img{max-width:100%;display:block}
.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
.site-header{height:78px;background:var(--ink);color:var(--text);border-bottom:1px solid var(--line);position:relative;z-index:20}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
.logo{display:flex;align-items:center;gap:11px;white-space:nowrap}
.logo-mark{width:35px;height:35px;border-radius:10px;background:var(--coral);display:grid;place-items:center;color:var(--ink);font-size:18px;font-weight:900;transform:rotate(-7deg)}
.logo-copy{font-weight:800;letter-spacing:.01em;font-size:16px}
.logo-copy small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;font-weight:600;margin-top:-4px}
.main-nav{display:flex;align-items:center;gap:5px}
.main-nav a{padding:9px 12px;color:#c9c3cc;font-size:13px;border-radius:8px;transition:.2s ease}
.main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:#fff;background:rgba(255,255,255,.09)}
.main-nav a.active{box-shadow:inset 0 -2px var(--coral)}
.header-download{background:var(--coral)!important;color:#1b161c!important;font-weight:800!important;padding:10px 17px!important;margin-left:8px}
.header-download:hover{background:#ff907c!important;transform:translateY(-1px)}
.menu-toggle{display:none;background:transparent;color:#fff;font-size:25px;padding:8px}
.hero{background:var(--ink);color:var(--text);overflow:hidden;position:relative;padding:86px 0 92px}
.hero:before{content:"";position:absolute;width:420px;height:420px;border:1px solid rgba(200,238,114,.18);border-radius:50%;right:-110px;top:-170px}
.hero:after{content:"";position:absolute;width:210px;height:210px;border:1px solid rgba(255,118,95,.22);border-radius:50%;right:55px;bottom:-140px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:74px;position:relative;z-index:1}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
.eyebrow:before,.section-kicker:before{content:"";width:22px;height:2px;background:currentColor}
.hero h1{font-size:clamp(36px,5vw,66px);line-height:1.12;letter-spacing:-.045em;margin:23px 0 22px;max-width:720px}
.hero h1 span{color:var(--coral)}
.hero-lead{font-size:17px;line-height:1.9;color:#c7c1cb;max-width:620px}
.hero-actions{display:flex;align-items:center;gap:13px;margin-top:34px;flex-wrap:wrap}
.btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 21px;border-radius:10px;font-size:14px;font-weight:800;transition:.2s ease;border:1px solid transparent}
.btn-primary{background:var(--coral);color:#1c171d}
.btn-primary:hover{background:#ff917d;transform:translateY(-2px);box-shadow:0 9px 20px rgba(255,118,95,.2)}
.btn-secondary{border-color:rgba(255,255,255,.25);color:#f5f1ec;background:rgba(255,255,255,.04)}
.btn-secondary:hover{border-color:var(--lime);color:var(--lime)}
.btn:focus,a:focus,input:focus,button:focus{outline:3px solid rgba(124,221,211,.5);outline-offset:3px}
.hero-meta{display:flex;gap:30px;margin-top:47px;padding-top:22px;border-top:1px solid var(--line);flex-wrap:wrap}
.meta-item strong{display:block;font-size:18px;color:#fff}
.meta-item span{font-size:12px;color:var(--muted)}
.launcher{background:#f1ede6;color:var(--dark-text);border-radius:22px;padding:18px;box-shadow:0 24px 70px rgba(0,0,0,.28);transform:rotate(1.5deg)}
.launcher-top{display:flex;align-items:center;justify-content:space-between;padding:4px 4px 17px;font-size:12px;font-weight:800}
.traffic{display:flex;gap:5px}.traffic i{width:7px;height:7px;border-radius:50%;display:block;background:var(--coral)}.traffic i:nth-child(2){background:#f1be54}.traffic i:nth-child(3){background:#91ca67}
.launcher-screen{background:var(--panel);border-radius:14px;padding:23px;min-height:315px;position:relative;overflow:hidden}
.launcher-screen:before{content:"";position:absolute;width:200px;height:200px;border:1px solid rgba(200,238,114,.2);border-radius:50%;right:-70px;top:-55px}
.screen-label{color:var(--lime);font-size:11px;font-weight:800;letter-spacing:.1em}
.launcher-screen h2{color:#fff;font-size:29px;line-height:1.2;margin:13px 0 9px}
.launcher-screen p{color:var(--muted);font-size:13px}
.status{display:flex;align-items:center;gap:7px;margin-top:27px;color:#e8e2dc;font-size:12px}.status b{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(200,238,114,.12)}
.screen-bottom{position:absolute;bottom:22px;left:23px;right:23px;display:flex;justify-content:space-between;align-items:end}
.screen-version{color:#fff;font-size:12px}.screen-version strong{display:block;font-size:19px}.screen-button{padding:11px 15px;background:var(--coral);border-radius:8px;font-size:12px;font-weight:800}
.launcher-note{display:flex;gap:12px;padding:17px 5px 3px;font-size:12px;color:var(--muted-dark)}
.launcher-note b{color:var(--dark-text)}
.section{padding:100px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:38px}
.section-head h2{font-size:clamp(27px,3vw,40px);line-height:1.25;letter-spacing:-.035em;margin-top:10px}
.section-head p{max-width:450px;color:var(--muted-dark);font-size:14px}
.download-section{background:var(--paper-2)}
.download-panel{display:grid;grid-template-columns:1fr .85fr;gap:30px;background:var(--panel);color:#fff;border-radius:var(--radius);padding:34px 38px;box-shadow:var(--shadow)}
.panel-title{font-size:24px;margin:9px 0 10px}.panel-copy{color:var(--muted);font-size:14px;max-width:560px}
.version-list{display:flex;gap:0;margin-top:27px;flex-wrap:wrap}
.version-list div{min-width:130px;padding-right:25px;margin-right:25px;border-right:1px solid var(--line)}
.version-list div:last-child{border:0}.version-list span{display:block;color:var(--muted);font-size:11px}.version-list strong{font-size:15px;color:#fff}
.download-action{border:1px solid var(--line);border-radius:14px;padding:24px;display:flex;flex-direction:column;justify-content:center;background:rgba(255,255,255,.035)}
.download-action small{color:var(--muted);font-size:12px;margin-bottom:13px}.download-action .btn{width:100%}.download-tip{font-size:11px;color:var(--muted);margin-top:12px;line-height:1.6}
.feature-section{background:var(--paper)}
.feature-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:75px;align-items:start}
.feature-intro{position:sticky;top:30px}.feature-intro h2{font-size:38px;line-height:1.25;margin:12px 0 17px}.feature-intro p{color:var(--muted-dark);font-size:15px}
.feature-lines{border-top:1px solid var(--line-dark)}
.feature-line{display:grid;grid-template-columns:66px 1fr 28px;gap:18px;align-items:center;padding:24px 0;border-bottom:1px solid var(--line-dark);transition:.2s}
.feature-line:hover{padding-left:9px;background:rgba(255,255,255,.45)}
.feature-number{color:var(--coral-dark);font-size:14px;font-weight:900}
.feature-line h3{font-size:18px;margin-bottom:5px}.feature-line p{font-size:13px;color:var(--muted-dark);line-height:1.7}.feature-arrow{color:var(--muted-dark);font-size:20px}
.insight-section{background:#e9e4dc}
.insight-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}
.insight-main,.insight-list{background:#fff;border-radius:var(--radius);padding:28px}
.insight-main{min-height:290px;display:flex;flex-direction:column;justify-content:space-between}
.card-tag{display:inline-block;color:var(--coral-dark);font-weight:800;font-size:11px;letter-spacing:.08em}
.insight-main h3{font-size:27px;line-height:1.35;max-width:560px;margin:22px 0 9px}.insight-main p{font-size:14px;color:var(--muted-dark);max-width:580px}
.text-link{display:inline-flex;color:var(--coral-dark);font-size:13px;font-weight:800;margin-top:20px}.text-link:hover{color:var(--ink)}
.insight-list{padding:11px 27px}
.update-row{display:grid;grid-template-columns:86px 1fr 18px;gap:14px;align-items:center;padding:19px 0;border-bottom:1px solid var(--line-dark)}.update-row:last-child{border-bottom:0}.update-row time{font-size:11px;color:var(--muted-dark)}.update-row h4{font-size:14px;line-height:1.5}.update-row:hover h4{color:var(--coral-dark)}.update-arrow{color:var(--coral-dark)}
.empty-state{padding:35px 10px;color:var(--muted-dark);font-size:13px;text-align:center}
.steps-section{background:var(--ink);color:#fff}.steps-section .section-head p{color:var(--muted)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);position:relative;gap:22px}.steps:before{content:"";position:absolute;top:24px;left:7%;right:7%;height:1px;background:rgba(255,255,255,.2)}
.step{position:relative;z-index:1}.step-no{width:48px;height:48px;border-radius:50%;background:var(--ink);border:1px solid var(--coral);display:grid;place-items:center;color:var(--coral);font-weight:900;margin-bottom:22px}.step h3{font-size:17px;margin-bottom:8px}.step p{font-size:13px;color:var(--muted);line-height:1.75}
.faq-section{background:var(--paper)}.faq-list{max-width:920px;margin:auto;border-top:1px solid var(--line-dark)}.faq-item{border-bottom:1px solid var(--line-dark)}.faq-item summary{list-style:none;cursor:pointer;padding:22px 4px;font-size:16px;font-weight:800;display:flex;justify-content:space-between;gap:20px}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";font-size:24px;font-weight:400;color:var(--coral-dark);line-height:1}.faq-item[open] summary:after{content:"−"}.faq-answer{color:var(--muted-dark);font-size:14px;padding:0 42px 22px 4px;max-width:800px}
.final-cta{background:var(--coral);color:#1c171d;padding:62px 0}.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}.final-cta h2{font-size:clamp(26px,3vw,39px);line-height:1.25}.final-cta p{font-size:14px;margin-top:7px}.final-cta .btn{background:var(--ink);color:#fff}.final-cta .btn:hover{background:var(--panel-2)}
.site-footer{background:var(--ink);color:#fff;padding:48px 0 25px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding-bottom:40px}.footer-brand p{color:var(--muted);font-size:13px;max-width:280px;margin-top:14px}.footer-title{color:#fff;font-size:13px;font-weight:800;margin-bottom:15px}.footer-links{display:grid;gap:9px}.footer-links a{color:var(--muted);font-size:12px}.footer-links a:hover{color:var(--lime)}.copyright{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;color:#817b87;font-size:11px}
@media (max-width:1024px){.hero-grid{gap:40px}.main-nav{gap:0}.main-nav a{padding-left:8px;padding-right:8px}.feature-layout{gap:45px}.footer-grid{grid-template-columns:1.3fr repeat(3,1fr)}}
@media (max-width:768px){
 .container{width:min(100% - 36px,var(--container))}.site-header{height:70px}.menu-toggle{display:block}.main-nav{display:none;position:absolute;top:69px;left:0;right:0;padding:14px 18px 20px;background:var(--ink);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;box-shadow:0 15px 30px rgba(0,0,0,.22)}.main-nav.open{display:flex}.main-nav a{padding:13px 12px}.header-download{margin:7px 0 0!important;text-align:center}
 .hero{padding:65px 0 70px}.hero-grid,.download-panel,.insight-grid,.feature-layout{grid-template-columns:1fr}.hero h1{font-size:43px}.hero-lead{font-size:15px}.hero-meta{margin-top:34px}.launcher{max-width:590px;margin:0 auto;transform:none}.feature-intro{position:static}.feature-intro h2{font-size:32px}.section{padding:75px 0}.section-head{display:block;margin-bottom:28px}.section-head p{margin-top:14px}.download-panel{padding:27px}.steps{grid-template-columns:1fr 1fr;gap:32px}.steps:before{display:none}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}
}
@media (max-width:520px){
 .container{width:calc(100% - 30px)}.logo-copy{font-size:14px}.logo-copy small{font-size:9px}.hero{padding-top:50px}.hero h1{font-size:34px}.hero-actions,.hero-actions .btn{width:100%}.hero-actions{align-items:stretch}.hero-meta{gap:18px}.meta-item strong{font-size:16px}.launcher-screen{min-height:290px;padding:19px}.launcher-screen h2{font-size:25px}.screen-bottom{left:19px;right:19px}.download-panel{padding:21px}.version-list{gap:16px}.version-list div{min-width:105px;padding-right:15px;margin-right:0}.insight-main,.insight-list{padding:22px}.insight-main h3{font-size:22px}.update-row{grid-template-columns:1fr 17px;gap:8px}.update-row time{grid-column:1/-1}.steps{grid-template-columns:1fr}.step{display:grid;grid-template-columns:48px 1fr;column-gap:16px}.step-no{grid-row:span 2;margin:0}.step p{grid-column:2}.faq-item summary{font-size:14px}.faq-answer{padding-right:4px}.cta-inner{display:block}.final-cta .btn{margin-top:22px;width:100%}.footer-grid{grid-template-columns:1fr 1fr;gap:27px}.footer-brand{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:5px}
}

/* roulang page: article */
:root{
      --ink:#17151d;
      --ink-soft:#211e29;
      --panel:#282331;
      --panel-2:#302a3b;
      --paper:#f7f4ef;
      --paper-2:#eeeae3;
      --text:#f8f5ef;
      --dark-text:#26222c;
      --muted:#aaa4b1;
      --muted-dark:#746d79;
      --line:rgba(255,255,255,.12);
      --line-dark:#ded8cf;
      --coral:#ff765f;
      --coral-dark:#df554b;
      --lime:#c8ee72;
      --cyan:#7cddd3;
      --radius:18px;
      --radius-sm:11px;
      --shadow:0 18px 50px rgba(20,16,27,.16);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--dark-text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:var(--ink);color:var(--text);border-bottom:1px solid var(--line);position:relative;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;white-space:nowrap}
    .logo-mark{width:35px;height:35px;border-radius:10px;background:var(--coral);display:grid;place-items:center;color:var(--ink);font-size:18px;font-weight:900;transform:rotate(-7deg)}
    .logo-copy{font-weight:800;letter-spacing:.01em;font-size:16px}
    .logo-copy small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;font-weight:600;margin-top:-4px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 12px;color:#c9c3cc;font-size:13px;border-radius:8px;transition:.2s ease}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:#fff;background:rgba(255,255,255,.09)}
    .main-nav a.active{box-shadow:inset 0 -2px var(--coral)}
    .header-download{background:var(--coral)!important;color:#1b161c!important;font-weight:800!important;padding:10px 17px!important;margin-left:8px}
    .header-download:hover{background:#ff907c!important;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:#fff;font-size:25px;padding:8px}
    .article-hero{background:var(--ink);color:var(--text);padding:68px 0 74px;position:relative;overflow:hidden}
    .article-hero:before{content:"";position:absolute;width:390px;height:390px;border:1px solid rgba(200,238,114,.16);border-radius:50%;right:-130px;top:-210px}
    .article-hero:after{content:"";position:absolute;width:180px;height:180px;border:1px solid rgba(255,118,95,.2);border-radius:50%;left:7%;bottom:-135px}
    .article-hero-inner{position:relative;z-index:1;max-width:900px}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:12px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before,.section-kicker:before{content:"";width:22px;height:2px;background:currentColor}
    .breadcrumb{display:flex;gap:10px;align-items:center;flex-wrap:wrap;color:#aaa4b1;font-size:13px;margin-bottom:24px}
    .breadcrumb a:hover{color:var(--lime)}
    .breadcrumb .separator{color:var(--coral)}
    .article-hero h1{font-size:clamp(34px,5vw,60px);line-height:1.2;letter-spacing:-.045em;margin:20px 0 22px;max-width:850px}
    .article-meta{display:flex;gap:18px;align-items:center;flex-wrap:wrap;color:#bdb6c0;font-size:13px}
    .article-meta span{display:inline-flex;align-items:center;gap:7px}
    .meta-dot{width:6px;height:6px;border-radius:50%;background:var(--coral);display:inline-block}
    .reading-area{padding:74px 0 100px;background:var(--paper)}
    .article-layout{display:grid;grid-template-columns:minmax(0,820px) 270px;gap:60px;align-items:start}
    .article-content{background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius);padding:clamp(28px,5vw,62px);box-shadow:0 10px 35px rgba(35,28,37,.05);min-width:0}
    .article-content h2{font-size:30px;line-height:1.35;margin:42px 0 17px;color:var(--ink)}
    .article-content h3{font-size:22px;line-height:1.45;margin:32px 0 13px;color:var(--ink)}
    .article-content h4{font-size:18px;margin:26px 0 10px}
    .article-content p{font-size:16px;color:#4d4751;line-height:2;margin:0 0 22px}
    .article-content ul,.article-content ol{padding-left:26px;margin:18px 0 26px;color:#4d4751}
    .article-content li{padding-left:6px;margin:8px 0;line-height:1.9}
    .article-content blockquote{margin:28px 0;padding:19px 23px;border-left:4px solid var(--coral);border-radius:0 12px 12px 0;background:#fff4ee;color:#5b4c4b}
    .article-content img{width:100%;height:auto;border-radius:12px;margin:28px auto}
    .article-content table{width:100%;border-collapse:collapse;margin:25px 0;font-size:14px;display:block;overflow-x:auto}
    .article-content th,.article-content td{padding:12px 15px;border:1px solid var(--line-dark);text-align:left;white-space:nowrap}
    .article-content th{background:var(--paper-2);color:var(--ink)}
    .article-content code{padding:2px 7px;border-radius:5px;background:#f0ece7;color:var(--coral-dark)}
    .article-content pre{padding:18px;overflow:auto;border-radius:11px;background:var(--ink);color:#eee9df;margin:22px 0}
    .article-content pre code{padding:0;background:none;color:inherit}
    .article-content a{color:var(--coral-dark);font-weight:700;text-decoration:underline;text-decoration-color:rgba(223,85,75,.35);text-underline-offset:3px}
    .article-aside{position:sticky;top:25px}
    .aside-card{background:var(--ink-soft);color:var(--text);border-radius:var(--radius);padding:24px;margin-bottom:16px}
    .aside-card h2{font-size:17px;margin:0 0 16px}
    .aside-card p{font-size:13px;line-height:1.8;color:var(--muted);margin:0 0 17px}
    .aside-card .btn{width:100%}
    .aside-list{border-top:1px solid var(--line)}
    .aside-list a{display:block;padding:13px 0;border-bottom:1px solid var(--line);font-size:13px;color:#d8d1d7;transition:.2s}
    .aside-list a:hover{color:var(--lime);padding-left:4px}
    .article-empty{text-align:center;padding:55px 20px}
    .empty-icon{width:62px;height:62px;border-radius:18px;background:#fff0e9;color:var(--coral-dark);display:grid;place-items:center;font-size:28px;margin:0 auto 18px}
    .article-empty h2{font-size:25px;margin:0 0 10px}
    .article-empty p{color:var(--muted-dark);font-size:14px;margin-bottom:24px}
    .btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 21px;border-radius:10px;font-size:14px;font-weight:800;transition:.2s ease;border:1px solid transparent}
    .btn-primary{background:var(--coral);color:#1c171d}
    .btn-primary:hover{background:#ff917d;transform:translateY(-2px);box-shadow:0 9px 20px rgba(255,118,95,.2)}
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:var(--panel-2);transform:translateY(-2px)}
    .btn:focus,a:focus,button:focus,input:focus{outline:3px solid rgba(124,221,211,.5);outline-offset:3px}
    .article-cta{background:var(--paper-2);padding:0 0 100px}
    .cta-box{background:var(--panel);color:#fff;border-radius:var(--radius);padding:42px 48px;display:flex;align-items:center;justify-content:space-between;gap:30px;position:relative;overflow:hidden}
    .cta-box:after{content:"";position:absolute;right:40px;top:-80px;width:220px;height:220px;border:1px solid rgba(200,238,114,.2);border-radius:50%}
    .cta-box h2{font-size:clamp(25px,3vw,36px);margin:0 0 8px;position:relative;z-index:1}
    .cta-box p{margin:0;color:#bdb6c0;font-size:14px;position:relative;z-index:1}
    .cta-box .btn{position:relative;z-index:1;white-space:nowrap}
    .site-footer{background:var(--ink);color:var(--text);padding:58px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding-bottom:45px}
    .footer-brand p{color:var(--muted);font-size:13px;max-width:270px;margin:18px 0 0}
    .footer-title{font-size:13px;color:#fff;font-weight:800;margin:4px 0 15px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:var(--muted);font-size:13px;transition:.2s}
    .footer-links a:hover{color:var(--lime);padding-left:3px}
    .copyright{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#827b87;font-size:11px}
    @media (max-width:1024px){
      .main-nav a{padding-left:8px;padding-right:8px;font-size:12px}
      .article-layout{grid-template-columns:minmax(0,1fr) 235px;gap:30px}
    }
    @media (max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .site-header{height:70px}
      .menu-toggle{display:block}
      .main-nav{display:none;position:absolute;top:70px;left:0;right:0;padding:15px 16px 20px;background:var(--ink);border-top:1px solid var(--line);flex-direction:column;align-items:stretch;box-shadow:0 18px 30px rgba(0,0,0,.2)}
      .main-nav.open{display:flex}
      .main-nav a{padding:13px 15px}
      .header-download{margin:5px 0 0!important;text-align:center}
      .article-hero{padding:50px 0 56px}
      .article-layout{display:block}
      .article-aside{position:static;margin-top:25px}
      .article-content{padding:28px 22px}
      .reading-area{padding:45px 0 65px}
      .cta-box{display:block;padding:32px 25px}
      .cta-box .btn{margin-top:23px;width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
      .footer-brand{grid-column:1/-1}
    }
    @media (max-width:520px){
      .article-hero h1{font-size:34px}
      .article-content h2{font-size:25px}
      .article-content h3{font-size:20px}
      .article-content p{font-size:15px}
      .footer-grid{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:7px}
    }

/* roulang page: category1 */
:root{
      --ink:#17151d;--ink-soft:#211e29;--panel:#282331;--panel-2:#302a3b;
      --paper:#f7f4ef;--paper-2:#eeeae3;--text:#f8f5ef;--dark-text:#26222c;
      --muted:#aaa4b1;--muted-dark:#746d79;--line:rgba(255,255,255,.12);
      --line-dark:#ded8cf;--coral:#ff765f;--coral-dark:#df554b;
      --lime:#c8ee72;--cyan:#7cddd3;--radius:18px;--radius-sm:11px;
      --shadow:0 18px 50px rgba(20,16,27,.16);--container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--dark-text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:var(--ink);color:var(--text);border-bottom:1px solid var(--line);position:relative;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;white-space:nowrap}
    .logo-mark{width:35px;height:35px;border-radius:10px;background:var(--coral);display:grid;place-items:center;color:var(--ink);font-size:18px;font-weight:900;transform:rotate(-7deg)}
    .logo-copy{font-weight:800;letter-spacing:.01em;font-size:16px}
    .logo-copy small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;font-weight:600;margin-top:-4px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 12px;color:#c9c3cc;font-size:13px;border-radius:8px;transition:.2s ease}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:#fff;background:rgba(255,255,255,.09)}
    .main-nav a.active{box-shadow:inset 0 -2px var(--coral)}
    .header-download{background:var(--coral)!important;color:#1b161c!important;font-weight:800!important;padding:10px 17px!important;margin-left:8px}
    .header-download:hover{background:#ff907c!important;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:#fff;font-size:25px;padding:8px}
    .inner-hero{background:var(--ink);color:var(--text);padding:72px 0 78px;position:relative;overflow:hidden}
    .inner-hero:after{content:"";position:absolute;width:360px;height:360px;border:1px solid rgba(124,221,211,.18);border-radius:50%;right:-100px;top:-145px}
    .breadcrumb{position:relative;z-index:1;color:#aaa4b1;font-size:13px;margin-bottom:32px}
    .breadcrumb a:hover{color:var(--lime)}
    .breadcrumb span{margin:0 8px;color:#625b6a}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:12px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before,.section-kicker:before{content:"";width:22px;height:2px;background:currentColor}
    .inner-hero h1{font-size:clamp(35px,5vw,62px);line-height:1.14;letter-spacing:-.045em;margin:20px 0 18px;max-width:760px}
    .inner-hero h1 em{font-style:normal;color:var(--coral)}
    .hero-lead{font-size:17px;line-height:1.9;color:#c7c1cb;max-width:710px;margin:0}
    .hero-actions{display:flex;gap:13px;flex-wrap:wrap;margin-top:29px}
    .btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 21px;border-radius:10px;font-size:14px;font-weight:800;transition:.2s ease;border:1px solid transparent}
    .btn-primary{background:var(--coral);color:#1c171d}
    .btn-primary:hover{background:#ff917d;transform:translateY(-2px);box-shadow:0 9px 20px rgba(255,118,95,.2)}
    .btn-secondary{border-color:rgba(255,255,255,.25);color:#f5f1ec;background:rgba(255,255,255,.04)}
    .btn-secondary:hover{border-color:var(--lime);color:var(--lime)}
    .btn:focus,a:focus,button:focus{outline:3px solid rgba(124,221,211,.5);outline-offset:3px}
    .section{padding:96px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:36px}
    .section-head h2{font-size:clamp(27px,3vw,40px);line-height:1.25;letter-spacing:-.035em;margin:10px 0 0}
    .section-head p{max-width:470px;color:var(--muted-dark);font-size:14px;margin:0}
    .product-overview{background:var(--paper)}
    .overview-layout{display:grid;grid-template-columns:.86fr 1.14fr;gap:64px;align-items:center}
    .product-card{background:var(--ink-soft);color:var(--text);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .product-card:before{content:"";position:absolute;width:180px;height:180px;border:1px solid rgba(200,238,114,.22);border-radius:50%;right:-55px;bottom:-80px}
    .product-card-top{display:flex;justify-content:space-between;align-items:center;position:relative}
    .card-tag{display:inline-block;color:var(--coral-dark);font-weight:800;font-size:11px;letter-spacing:.08em}
    .product-card .card-tag{color:var(--lime)}
    .status{font-size:11px;color:var(--lime);display:flex;gap:7px;align-items:center}
    .status:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--lime)}
    .product-card h3{font-size:30px;margin:42px 0 8px;position:relative}
    .product-card p{color:#bcb5c2;font-size:14px;position:relative}
    .mini-screen{height:116px;background:var(--panel-2);border:1px solid var(--line);border-radius:12px;margin:24px 0;display:flex;align-items:center;gap:15px;padding:18px;position:relative}
    .mini-icon{width:48px;height:48px;border-radius:13px;background:var(--coral);display:grid;place-items:center;font-weight:900;font-size:22px;color:var(--ink)}
    .mini-screen strong{display:block;font-size:16px}.mini-screen small{color:var(--muted);font-size:12px}
    .overview-copy h2{font-size:35px;line-height:1.28;margin:12px 0 17px}
    .overview-copy>p{color:var(--muted-dark);font-size:15px;max-width:520px}
    .check-list{list-style:none;padding:0;margin:27px 0 0;display:grid;gap:15px}
    .check-list li{display:flex;gap:13px;align-items:flex-start;font-size:14px}
    .check-list b{flex:0 0 24px;height:24px;border-radius:7px;background:var(--lime);color:var(--ink);display:grid;place-items:center;font-size:13px}
    .feature-section{background:var(--paper-2)}
    .feature-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:70px}
    .feature-intro h2{font-size:36px;line-height:1.3;margin:12px 0 16px}
    .feature-intro p{color:var(--muted-dark);font-size:15px}
    .feature-lines{border-top:1px solid var(--line-dark)}
    .feature-line{display:grid;grid-template-columns:62px 1fr 28px;gap:18px;align-items:center;padding:23px 0;border-bottom:1px solid var(--line-dark);transition:.2s}
    .feature-line:hover{padding-left:9px;background:rgba(255,255,255,.45)}
    .feature-number{color:var(--coral-dark);font-size:14px;font-weight:900}
    .feature-line h3{font-size:18px;margin:0 0 4px}.feature-line p{font-size:13px;color:var(--muted-dark);margin:0}
    .feature-arrow{color:var(--muted-dark);font-size:20px}
    .scene-section{background:#e9e4dc}
    .scene-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
    .scene-large,.scene-stack article{background:#fff;border-radius:var(--radius);padding:28px}
    .scene-large{min-height:285px;display:flex;flex-direction:column;justify-content:space-between}
    .scene-large h3{font-size:28px;line-height:1.35;margin:22px 0 9px}
    .scene-large p,.scene-stack p{font-size:14px;color:var(--muted-dark);margin:0}
    .scene-stack{display:grid;gap:18px}.scene-stack article{min-height:132px}
    .scene-stack h3{font-size:19px;margin:9px 0 5px}
    .icon-label{font-size:22px;color:var(--coral-dark);font-weight:900}
    .download-section{background:var(--ink);color:var(--text)}
    .download-box{display:grid;grid-template-columns:1fr .8fr;gap:42px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:34px}
    .download-box h2{font-size:32px;margin:10px 0}.download-box p{color:var(--muted);font-size:14px;margin:0}
    .download-side{border-left:1px solid var(--line);padding-left:35px}
    .download-side .btn{width:100%;margin-bottom:16px}
    .download-note{font-size:12px;color:var(--muted);line-height:1.7}
    .faq-section{background:var(--paper)}
    .faq-list{max-width:900px;margin:0 auto;border-top:1px solid var(--line-dark)}
    .faq-item{border-bottom:1px solid var(--line-dark)}
    .faq-item summary{list-style:none;cursor:pointer;padding:22px 42px 22px 0;font-size:17px;font-weight:800;position:relative}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";position:absolute;right:5px;color:var(--coral-dark);font-size:25px;font-weight:400}
    .faq-item[open] summary:after{content:"−"}.faq-item[open] summary{color:var(--coral-dark)}
    .faq-answer{padding:0 45px 23px 0;color:var(--muted-dark);font-size:14px;max-width:780px}
    .final-cta{background:var(--coral);color:var(--ink);padding:58px 0}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .final-cta h2{font-size:32px;margin:0 0 7px}.final-cta p{margin:0;font-size:14px}
    .final-cta .btn{background:var(--ink);color:#fff}.final-cta .btn:hover{background:var(--panel)}
    .site-footer{background:var(--ink);color:var(--text);padding:58px 0 23px}
    .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:35px}
    .footer-brand p{color:var(--muted);font-size:13px;max-width:270px;margin-top:18px}
    .footer-title{font-size:13px;font-weight:800;margin:5px 0 14px;color:#fff}
    .footer-links{display:grid;gap:9px}.footer-links a{font-size:13px;color:var(--muted);transition:.2s}
    .footer-links a:hover{color:var(--lime);padding-left:3px}
    .copyright{border-top:1px solid var(--line);margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;color:#827b89;font-size:11px}
    @media(max-width:1024px){.main-nav a{padding:8px 7px;font-size:12px}.hero-grid,.overview-layout{gap:38px}.feature-layout{gap:40px}}
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 34px))}.site-header{height:70px}.menu-toggle{display:block}
      .main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:var(--ink);padding:14px 17px 20px;flex-direction:column;align-items:stretch;border-bottom:1px solid var(--line)}
      .main-nav.open{display:flex}.main-nav a{padding:12px 14px}.header-download{margin:5px 0 0!important;text-align:center}
      .inner-hero{padding:49px 0 60px}.inner-hero h1{font-size:42px}.hero-lead{font-size:15px}
      .section{padding:70px 0}.section-head{display:block;margin-bottom:27px}.section-head p{margin-top:13px}
      .overview-layout,.feature-layout,.scene-grid,.download-box{grid-template-columns:1fr}.feature-intro{position:static}.download-side{border-left:0;border-top:1px solid var(--line);padding:25px 0 0}
      .footer-grid{grid-template-columns:1.4fr 1fr;gap:28px}.cta-inner{display:block}.final-cta .btn{margin-top:22px}
    }
    @media(max-width:520px){
      .logo-copy{font-size:14px}.logo-copy small{font-size:9px}.inner-hero h1{font-size:35px}.hero-actions .btn{width:100%}
      .product-card,.scene-large,.scene-stack article,.download-box{padding:23px}.product-card h3{margin-top:30px}
      .feature-line{grid-template-columns:42px 1fr 18px;gap:10px}.feature-line h3{font-size:16px}.feature-line p{font-size:12px}
      .download-box h2,.final-cta h2{font-size:27px}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-bottom:8px}
    }

/* roulang page: category2 */
:root{
      --ink:#17151d;
      --ink-soft:#211e29;
      --panel:#282331;
      --panel-2:#302a3b;
      --paper:#f7f4ef;
      --paper-2:#eeeae3;
      --text:#f8f5ef;
      --dark-text:#26222c;
      --muted:#aaa4b1;
      --muted-dark:#746d79;
      --line:rgba(255,255,255,.12);
      --line-dark:#ded8cf;
      --coral:#ff765f;
      --coral-dark:#df554b;
      --lime:#c8ee72;
      --cyan:#7cddd3;
      --radius:18px;
      --radius-sm:11px;
      --shadow:0 18px 50px rgba(20,16,27,.16);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;background:var(--paper);color:var(--dark-text);line-height:1.7;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:var(--ink);color:var(--text);border-bottom:1px solid var(--line);position:relative;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;white-space:nowrap}
    .logo-mark{width:35px;height:35px;border-radius:10px;background:var(--coral);display:grid;place-items:center;color:var(--ink);font-size:18px;font-weight:900;transform:rotate(-7deg)}
    .logo-copy{font-weight:800;letter-spacing:.01em;font-size:16px}
    .logo-copy small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;font-weight:600;margin-top:-4px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 12px;color:#c9c3cc;font-size:13px;border-radius:8px;transition:.2s ease}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:#fff;background:rgba(255,255,255,.09)}
    .main-nav a.active{box-shadow:inset 0 -2px var(--coral)}
    .header-download{background:var(--coral)!important;color:#1b161c!important;font-weight:800!important;padding:10px 17px!important;margin-left:8px}
    .header-download:hover{background:#ff907c!important;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:#fff;font-size:25px;padding:8px}
    .btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 21px;border-radius:10px;font-size:14px;font-weight:800;transition:.2s ease;border:1px solid transparent}
    .btn-primary{background:var(--coral);color:#1c171d}
    .btn-primary:hover{background:#ff917d;transform:translateY(-2px);box-shadow:0 9px 20px rgba(255,118,95,.2)}
    .btn-secondary{border-color:rgba(255,255,255,.25);color:#f5f1ec;background:rgba(255,255,255,.04)}
    .btn-secondary:hover{border-color:var(--lime);color:var(--lime)}
    .btn-light{background:var(--paper);color:var(--ink)}
    .btn-light:hover{background:#fff;transform:translateY(-2px)}
    .btn:focus,a:focus,input:focus,button:focus{outline:3px solid rgba(124,221,211,.5);outline-offset:3px}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:12px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before,.section-kicker:before{content:"";width:22px;height:2px;background:currentColor}
    .page-hero{background:var(--ink);color:var(--text);padding:78px 0 84px;position:relative;overflow:hidden}
    .page-hero:after{content:"";position:absolute;width:380px;height:380px;border:1px solid rgba(124,221,211,.2);border-radius:50%;right:-120px;top:-190px}
    .hero-content{position:relative;z-index:1;max-width:760px}
    .page-hero h1{font-size:clamp(36px,5vw,62px);line-height:1.14;letter-spacing:-.045em;margin:22px 0 20px}
    .page-hero h1 span{color:var(--coral)}
    .page-hero p{max-width:680px;color:#c7c1cb;font-size:17px;line-height:1.9;margin:0}
    .breadcrumb{margin-top:30px;color:#a9a2ae;font-size:13px}
    .breadcrumb a:hover{color:var(--lime)}
    .breadcrumb em{font-style:normal;color:#665f6c;padding:0 9px}
    .section{padding:94px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:36px}
    .section-head h2{font-size:clamp(27px,3vw,40px);line-height:1.25;letter-spacing:-.035em;margin:10px 0 0}
    .section-head p{max-width:470px;color:var(--muted-dark);font-size:14px;margin:0}
    .download-section{background:var(--paper-2)}
    .download-console{display:grid;grid-template-columns:1.1fr .9fr;background:var(--panel);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);color:var(--text)}
    .console-info{padding:40px 42px}
    .console-side{background:var(--panel-2);padding:40px 38px;display:flex;flex-direction:column;justify-content:center}
    .status{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:12px;font-weight:800}
    .status:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(200,238,114,.12)}
    .console-info h2{font-size:31px;line-height:1.3;margin:18px 0 12px}
    .console-info>p{color:#bcb5c1;max-width:590px;margin-bottom:28px}
    .version-list{display:flex;gap:0;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:24px}
    .version-list div{min-width:130px;padding-right:24px;margin-right:24px;border-right:1px solid var(--line)}
    .version-list div:last-child{border:0}
    .version-list span{display:block;color:var(--muted);font-size:11px}
    .version-list strong{font-size:15px;color:#fff}
    .download-side-title{font-size:19px;font-weight:800;margin-bottom:8px}
    .download-side-copy{font-size:13px;color:#bcb5c1;margin-bottom:24px}
    .download-side .btn{width:100%}
    .notice{margin-top:18px;padding:13px 15px;border-radius:var(--radius-sm);background:rgba(255,255,255,.06);font-size:12px;color:#aaa4b1}
    .timeline-section{background:var(--paper)}
    .timeline{max-width:900px;border-left:2px solid var(--line-dark);margin:8px 0 0 12px}
    .timeline-item{position:relative;padding:0 0 34px 40px}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-item:before{content:"";position:absolute;left:-8px;top:5px;width:14px;height:14px;border-radius:50%;background:var(--coral);border:4px solid var(--paper)}
    .timeline-date{color:var(--coral-dark);font-size:12px;font-weight:800;letter-spacing:.05em}
    .timeline-item h3{font-size:21px;margin:7px 0 5px}
    .timeline-item p{color:var(--muted-dark);font-size:14px;margin:0;max-width:690px}
    .prepare-section{background:#e9e4dc}
    .prepare-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .prepare-card{background:#fff;border-radius:var(--radius);padding:32px}
    .prepare-card h3{font-size:22px;margin:0 0 15px}
    .check-list{list-style:none;padding:0;margin:0}
    .check-list li{display:flex;gap:13px;padding:15px 0;border-bottom:1px solid #ebe6df;font-size:14px}
    .check-list li:last-child{border-bottom:0}
    .check-list b{color:var(--coral-dark);font-size:16px}
    .tip-card{background:var(--ink);color:var(--text);border-radius:var(--radius);padding:32px;display:flex;flex-direction:column;justify-content:space-between}
    .tip-card h3{font-size:24px;line-height:1.35;margin:0 0 13px}
    .tip-card p{color:#bcb5c1;font-size:14px}
    .faq-section{background:var(--paper-2)}
    .faq-list{max-width:900px;margin: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;align-items:center;justify-content:space-between;text-align:left;background:#fff;color:var(--dark-text);font-weight:800;padding:20px 22px;font-size:15px}
    .faq-question span:last-child{color:var(--coral-dark);font-size:22px;line-height:1;transition:.2s}
    .faq-answer{display:none;padding:0 22px 20px;color:var(--muted-dark);font-size:14px;line-height:1.8}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta-section{background:var(--coral);color:var(--ink);padding:65px 0}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .cta-inner h2{font-size:clamp(27px,3vw,39px);line-height:1.25;margin:0 0 10px}
    .cta-inner p{margin:0;color:#56343a;font-size:14px}
    .site-footer{background:var(--ink);color:var(--text);padding:63px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.5fr .8fr .9fr .9fr;gap:38px}
    .footer-brand p{max-width:280px;color:var(--muted);font-size:13px;margin-top:20px}
    .footer-title{font-size:13px;font-weight:800;margin-bottom:16px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:var(--muted);font-size:13px;transition:.2s}
    .footer-links a:hover{color:var(--lime);padding-left:3px}
    .copyright{border-top:1px solid var(--line);margin-top:45px;padding-top:19px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;color:#817986;font-size:11px}
    @media(max-width:1024px){
      .main-nav a{padding:9px 7px;font-size:12px}
      .download-console,.prepare-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1.3fr 1fr 1fr}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 34px))}
      .site-header{height:70px}
      .menu-toggle{display:block}
      .main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:var(--ink);padding:14px 17px 20px;border-top:1px solid var(--line);flex-direction:column;align-items:stretch;box-shadow:0 16px 25px rgba(0,0,0,.2)}
      .main-nav.show{display:flex}
      .main-nav a{padding:13px 14px}
      .header-download{margin:5px 0 0}
      .page-hero{padding:62px 0 65px}
      .section{padding:70px 0}
      .section-head,.cta-inner{display:block}
      .section-head p{margin-top:15px}
      .cta-inner .btn{margin-top:24px}
      .console-info,.console-side{padding:30px 25px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
    }
    @media(max-width:520px){
      .logo-copy{font-size:14px}
      .logo-copy small{font-size:9px}
      .page-hero h1{font-size:37px}
      .page-hero p{font-size:15px}
      .version-list{gap:18px}
      .version-list div{min-width:calc(50% - 10px);margin:0;padding:0;border:0}
      .prepare-card,.tip-card{padding:25px}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:7px}
    }

/* roulang page: category3 */
:root{
      --ink:#17151d;--ink-soft:#211e29;--panel:#282331;--panel-2:#302a3b;
      --paper:#f7f4ef;--paper-2:#eeeae3;--text:#f8f5ef;--dark-text:#26222c;
      --muted:#aaa4b1;--muted-dark:#746d79;--line:rgba(255,255,255,.12);
      --line-dark:#ded8cf;--coral:#ff765f;--coral-dark:#df554b;--lime:#c8ee72;
      --cyan:#7cddd3;--radius:18px;--radius-sm:11px;
      --shadow:0 18px 50px rgba(20,16,27,.16);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--dark-text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    img{max-width:100%;display:block}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:var(--ink);color:var(--text);border-bottom:1px solid var(--line);position:relative;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;white-space:nowrap}
    .logo-mark{width:35px;height:35px;border-radius:10px;background:var(--coral);display:grid;place-items:center;color:var(--ink);font-size:18px;font-weight:900;transform:rotate(-7deg)}
    .logo-copy{font-weight:800;letter-spacing:.01em;font-size:16px}
    .logo-copy small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;font-weight:600;margin-top:-4px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 12px;color:#c9c3cc;font-size:13px;border-radius:8px;transition:.2s ease}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:#fff;background:rgba(255,255,255,.09)}
    .main-nav a.active{box-shadow:inset 0 -2px var(--coral)}
    .header-download{background:var(--coral)!important;color:#1b161c!important;font-weight:800!important;padding:10px 17px!important;margin-left:8px}
    .header-download:hover{background:#ff907c!important;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:#fff;font-size:25px;padding:8px}
    .btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 21px;border-radius:10px;font-size:14px;font-weight:800;transition:.2s ease;border:1px solid transparent}
    .btn-primary{background:var(--coral);color:#1c171d}
    .btn-primary:hover{background:#ff917d;transform:translateY(-2px);box-shadow:0 9px 20px rgba(255,118,95,.2)}
    .btn-secondary{border-color:rgba(255,255,255,.25);color:#f5f1ec;background:rgba(255,255,255,.04)}
    .btn-secondary:hover{border-color:var(--lime);color:var(--lime)}
    .btn-light{background:#fff;color:var(--dark-text);border-color:var(--line-dark)}
    .btn-light:hover{border-color:var(--coral-dark);color:var(--coral-dark);transform:translateY(-2px)}
    .btn:focus,a:focus,button:focus,input:focus{outline:3px solid rgba(124,221,211,.5);outline-offset:3px}
    .hero{background:var(--ink);color:var(--text);position:relative;overflow:hidden;padding:78px 0 84px}
    .hero:before{content:"";position:absolute;width:430px;height:430px;border:1px solid rgba(200,238,114,.18);border-radius:50%;right:-130px;top:-190px}
    .hero:after{content:"";position:absolute;width:180px;height:180px;border:1px solid rgba(255,118,95,.22);border-radius:50%;left:7%;bottom:-130px}
    .hero-inner{position:relative;z-index:1;max-width:850px}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:12px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before,.section-kicker:before{content:"";width:22px;height:2px;background:currentColor}
    .hero h1{font-size:clamp(36px,5vw,62px);line-height:1.15;letter-spacing:-.045em;margin:23px 0 20px}
    .hero h1 span{color:var(--coral)}
    .hero-lead{font-size:17px;line-height:1.9;color:#c7c1cb;max-width:720px;margin:0}
    .hero-actions{display:flex;gap:13px;flex-wrap:wrap;margin-top:32px}
    .crumbs{padding:18px 0;color:var(--muted-dark);font-size:13px}
    .crumbs a{color:var(--coral-dark)}
    .section{padding:88px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:34px}
    .section-head h2{font-size:clamp(27px,3vw,40px);line-height:1.25;letter-spacing:-.035em;margin:10px 0 0}
    .section-head p{max-width:470px;color:var(--muted-dark);font-size:14px;margin:0}
    .guide-overview{background:var(--paper)}
    .guide-layout{display:grid;grid-template-columns:280px 1fr;gap:52px;align-items:start}
    .guide-index{position:sticky;top:24px;background:var(--ink-soft);color:var(--text);border-radius:var(--radius);padding:25px}
    .guide-index h3{font-size:18px;margin:0 0 17px}
    .guide-index a{display:flex;align-items:center;gap:10px;color:#c9c3cc;border-top:1px solid var(--line);padding:13px 0;font-size:13px;transition:.2s}
    .guide-index a:hover{color:var(--lime);padding-left:5px}
    .guide-index b{color:var(--coral);font-size:12px}
    .steps{display:grid;gap:14px}
    .step-card{display:grid;grid-template-columns:72px 1fr auto;gap:22px;align-items:center;background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius);padding:25px 27px;transition:.2s}
    .step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c9c1b8}
    .step-no{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:var(--paper-2);color:var(--coral-dark);font-size:18px;font-weight:900}
    .step-card h3{font-size:19px;margin:0 0 5px}
    .step-card p{font-size:13px;color:var(--muted-dark);margin:0}
    .step-mark{color:var(--coral-dark);font-size:23px}
    .check-section{background:var(--paper-2)}
    .check-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .check-panel{background:var(--ink-soft);color:var(--text);border-radius:var(--radius);padding:30px}
    .check-panel.light{background:#fff;color:var(--dark-text);border:1px solid var(--line-dark)}
    .check-panel h3{font-size:22px;margin:0 0 18px}
    .check-list{list-style:none;padding:0;margin:0}
    .check-list li{position:relative;padding:12px 0 12px 29px;border-top:1px solid var(--line)}
    .light .check-list li{border-color:var(--line-dark)}
    .check-list li:before{content:"✓";position:absolute;left:0;color:var(--lime);font-weight:900}
    .light .check-list li:before{color:var(--coral-dark)}
    .notice{margin-top:20px;padding:14px 16px;border-left:3px solid var(--coral);background:rgba(255,118,95,.09);font-size:13px;color:#d8d1da}
    .light .notice{color:var(--muted-dark)}
    .settings-section{background:var(--paper)}
    .settings-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}
    .setting-board{background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius);padding:30px}
    .setting-board h3{font-size:24px;margin:0 0 8px}
    .setting-board>p{color:var(--muted-dark);font-size:14px;margin:0 0 22px}
    .setting-row{display:flex;justify-content:space-between;gap:20px;padding:16px 0;border-top:1px solid var(--line-dark);font-size:14px}
    .setting-row span{color:var(--muted-dark)}
    .setting-row strong{font-weight:800}
    .tip-card{background:var(--coral);border-radius:var(--radius);padding:30px;color:var(--ink)}
    .tip-card .section-kicker{color:var(--ink)}
    .tip-card h3{font-size:26px;line-height:1.35;margin:15px 0}
    .tip-card p{font-size:14px;margin:0 0 24px}
    .faq-section{background:#e9e4dc}
    .faq-list{max-width:900px;margin:0 auto;display:grid;gap:10px}
    .faq-item{background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius-sm);overflow:hidden}
    .faq-item summary{cursor:pointer;list-style:none;padding:20px 24px;font-weight:800;display:flex;justify-content:space-between;gap:20px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";color:var(--coral-dark);font-size:20px;line-height:1}
    .faq-item[open] summary:after{content:"－"}
    .faq-answer{padding:0 24px 21px;color:var(--muted-dark);font-size:14px;max-width:780px}
    .cta{background:var(--ink);color:var(--text);padding:66px 0}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .cta h2{font-size:clamp(27px,3vw,42px);line-height:1.25;margin:10px 0}
    .cta p{color:#bcb5c1;margin:0;max-width:590px;font-size:14px}
    .site-footer{background:var(--ink);color:var(--text);border-top:1px solid var(--line);padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:35px}
    .footer-brand p{color:var(--muted);font-size:13px;max-width:270px;margin-top:18px}
    .footer-title{font-size:13px;font-weight:800;margin-bottom:15px;color:#fff}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:var(--muted);font-size:13px;transition:.2s}
    .footer-links a:hover{color:var(--lime)}
    .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:42px;padding-top:18px;color:#89828f;font-size:11px;flex-wrap:wrap}
    @media(max-width:1024px){
      .main-nav a{padding-left:8px;padding-right:8px;font-size:12px}
      .guide-layout{grid-template-columns:230px 1fr;gap:28px}
    }
    @media(max-width:768px){
      .site-header{height:auto;min-height:72px}
      .header-inner{min-height:72px;position:relative}
      .menu-toggle{display:block}
      .main-nav{display:none;position:absolute;top:72px;left:0;right:0;background:var(--ink);padding:12px 20px 20px;flex-direction:column;align-items:stretch;border-top:1px solid var(--line);box-shadow:0 15px 30px rgba(0,0,0,.2)}
      .main-nav.is-open{display:flex}
      .main-nav a{padding:13px 12px}
      .header-download{margin:5px 0 0!important;text-align:center}
      .container{width:min(var(--container),calc(100% - 34px))}
      .hero{padding:62px 0 68px}
      .guide-layout,.check-grid,.settings-layout{grid-template-columns:1fr}
      .guide-index{position:static}
      .step-card{grid-template-columns:55px 1fr;gap:15px;padding:21px}
      .step-mark{display:none}
      .section{padding:68px 0}
      .section-head,.cta-inner{display:block}
      .section-head p{margin-top:14px}
      .cta .btn{margin-top:24px}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:520px){
      .logo-copy{font-size:14px}
      .logo-copy small{font-size:9px}
      .hero h1{font-size:37px}
      .hero-lead{font-size:15px}
      .hero-actions .btn{width:100%}
      .step-card h3{font-size:17px}
      .check-panel,.setting-board,.tip-card{padding:23px}
      .setting-row{display:block}
      .setting-row strong{display:block;margin-top:3px}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:8px}
    }

/* roulang page: category4 */
:root{
      --ink:#17151d;
      --ink-soft:#211e29;
      --panel:#282331;
      --panel-2:#302a3b;
      --paper:#f7f4ef;
      --paper-2:#eeeae3;
      --text:#f8f5ef;
      --dark-text:#26222c;
      --muted:#aaa4b1;
      --muted-dark:#746d79;
      --line:rgba(255,255,255,.12);
      --line-dark:#ded8cf;
      --coral:#ff765f;
      --coral-dark:#df554b;
      --lime:#c8ee72;
      --cyan:#7cddd3;
      --radius:18px;
      --radius-sm:11px;
      --shadow:0 18px 50px rgba(20,16,27,.16);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--dark-text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    :focus-visible{outline:3px solid rgba(124,221,211,.7);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:var(--ink);color:var(--text);border-bottom:1px solid var(--line);position:relative;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;white-space:nowrap}
    .logo-mark{width:35px;height:35px;border-radius:10px;background:var(--coral);display:grid;place-items:center;color:var(--ink);font-size:18px;font-weight:900;transform:rotate(-7deg)}
    .logo-copy{font-weight:800;letter-spacing:.01em;font-size:16px}
    .logo-copy small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;font-weight:600;margin-top:-4px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 12px;color:#c9c3cc;font-size:13px;border-radius:8px;transition:.2s ease}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:#fff;background:rgba(255,255,255,.09)}
    .main-nav a.active{box-shadow:inset 0 -2px var(--coral)}
    .header-download{background:var(--coral)!important;color:#1b161c!important;font-weight:800!important;padding:10px 17px!important;margin-left:8px}
    .header-download:hover{background:#ff907c!important;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:#fff;font-size:25px;padding:8px}
    .support-hero{background:var(--ink);color:var(--text);padding:78px 0 82px;position:relative;overflow:hidden}
    .support-hero:before{content:"?";position:absolute;right:9%;top:-40px;color:rgba(200,238,114,.08);font-size:330px;font-weight:900;line-height:1}
    .hero-inner{position:relative;z-index:1;max-width:760px}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:12px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before,.section-kicker:before{content:"";width:22px;height:2px;background:currentColor}
    h1,h2,h3,p{margin-top:0}
    .support-hero h1{font-size:clamp(36px,5vw,64px);line-height:1.12;letter-spacing:-.045em;margin:22px 0 20px}
    .support-hero h1 span{color:var(--coral)}
    .hero-lead{font-size:17px;line-height:1.9;color:#c7c1cb;max-width:700px;margin-bottom:30px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 21px;border-radius:10px;font-size:14px;font-weight:800;transition:.2s ease;border:1px solid transparent}
    .btn-primary{background:var(--coral);color:#1c171d}
    .btn-primary:hover{background:#ff917d;transform:translateY(-2px);box-shadow:0 9px 20px rgba(255,118,95,.2)}
    .btn-secondary{border-color:rgba(255,255,255,.25);color:#f5f1ec;background:rgba(255,255,255,.04)}
    .btn-secondary:hover{border-color:var(--lime);color:var(--lime)}
    .crumbs{padding:20px 0;color:var(--muted-dark);font-size:13px}
    .crumbs a:hover{color:var(--coral-dark)}
    .crumbs span{margin:0 8px;color:#aaa29a}
    .section{padding:92px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:34px}
    .section-head h2{font-size:clamp(28px,3vw,40px);line-height:1.25;letter-spacing:-.035em;margin:10px 0 0}
    .section-head p{max-width:470px;color:var(--muted-dark);font-size:14px;margin-bottom:2px}
    .support-map{background:var(--paper-2)}
    .issue-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:58px;align-items:start}
    .issue-intro h2{font-size:36px;line-height:1.3;margin:10px 0 16px}
    .issue-intro p{color:var(--muted-dark);font-size:15px}
    .issue-note{margin-top:26px;padding:18px 20px;border-left:3px solid var(--coral);background:#fff;color:#625b64;font-size:13px}
    .issue-list{border-top:1px solid var(--line-dark)}
    .issue-row{display:grid;grid-template-columns:58px 1fr 22px;gap:18px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line-dark);transition:.2s ease}
    .issue-row:hover{padding-left:9px;background:rgba(255,255,255,.55)}
    .issue-icon{width:42px;height:42px;border-radius:12px;background:var(--ink);color:var(--lime);display:grid;place-items:center;font-weight:900;font-size:17px}
    .issue-row h3{font-size:17px;margin:0 0 4px}
    .issue-row p{font-size:13px;color:var(--muted-dark);margin:0;line-height:1.65}
    .issue-arrow{font-size:22px;color:var(--coral-dark)}
    .check-section{background:var(--paper)}
    .check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .check-card{background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius);padding:25px;min-height:190px;transition:.2s ease}
    .check-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(255,118,95,.4)}
    .check-card .num{color:var(--coral-dark);font-size:12px;font-weight:900;letter-spacing:.12em}
    .check-card h3{font-size:20px;margin:18px 0 8px}
    .check-card p{font-size:13px;color:var(--muted-dark);margin:0}
    .process-section{background:#e9e4dc}
    .process-track{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #cfc7bc}
    .process-step{padding:27px 24px 10px 0;position:relative}
    .process-step:not(:last-child){margin-right:24px;border-right:1px solid #cfc7bc}
    .process-step strong{display:block;font-size:42px;color:var(--coral-dark);line-height:1;margin-bottom:22px}
    .process-step h3{font-size:17px;margin-bottom:8px}
    .process-step p{font-size:13px;color:var(--muted-dark);margin:0}
    .faq-section{background:var(--paper)}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px}
    .faq-intro h2{font-size:36px;line-height:1.3;margin:10px 0 15px}
    .faq-intro p{color:var(--muted-dark);font-size:14px}
    .faq-list{border-top:1px solid var(--line-dark)}
    .faq-item{border-bottom:1px solid var(--line-dark)}
    .faq-question{width:100%;padding:19px 0;background:transparent;color:var(--dark-text);display:flex;justify-content:space-between;align-items:center;text-align:left;font-size:15px;font-weight:800}
    .faq-question .plus{font-size:24px;color:var(--coral-dark);font-weight:400;transition:.25s}
    .faq-answer{max-height:0;overflow:hidden;color:var(--muted-dark);font-size:14px;line-height:1.8;transition:max-height .3s ease}
    .faq-answer p{padding:0 36px 19px 0;margin:0}
    .faq-item.open .faq-answer{max-height:180px}
    .faq-item.open .plus{transform:rotate(45deg)}
    .cta-section{padding:72px 0;background:var(--ink);color:var(--text)}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta-box h2{font-size:clamp(27px,3vw,40px);line-height:1.25;margin:10px 0}
    .cta-box p{color:#bdb6c1;margin:0;font-size:14px}
    .site-footer{background:var(--ink);color:var(--text);border-top:1px solid var(--line);padding:62px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:35px}
    .footer-brand p{color:var(--muted);font-size:13px;max-width:275px;margin:18px 0 0}
    .footer-title{font-size:13px;color:#fff;font-weight:800;margin:8px 0 15px}
    .footer-links{display:flex;flex-direction:column;gap:8px}
    .footer-links a{color:var(--muted);font-size:13px;transition:.2s}
    .footer-links a:hover{color:var(--lime);padding-left:3px}
    .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:45px;padding-top:20px;color:#827b88;font-size:11px;flex-wrap:wrap}
    @media(max-width:1024px){
      .main-nav a{padding-left:8px;padding-right:8px;font-size:12px}
      .issue-layout,.faq-layout{gap:38px}
      .footer-grid{grid-template-columns:1.4fr repeat(3,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 36px))}
      .site-header{height:70px}
      .menu-toggle{display:block}
      .main-nav{display:none;position:absolute;left:18px;right:18px;top:70px;padding:12px;background:var(--ink-soft);border:1px solid var(--line);border-radius:0 0 14px 14px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
      .main-nav.show{display:flex}
      .main-nav a{padding:12px 14px}
      .header-download{margin-left:0;text-align:center}
      .support-hero{padding:62px 0 68px}
      .support-hero:before{right:-50px;top:40px;font-size:220px}
      .issue-layout,.faq-layout{grid-template-columns:1fr}
      .issue-intro h2,.faq-intro h2{font-size:31px}
      .check-grid{grid-template-columns:1fr 1fr}
      .process-track{grid-template-columns:1fr 1fr}
      .process-step:nth-child(2){border-right:0}
      .process-step:nth-child(-n+2){border-bottom:1px solid #cfc7bc}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
      .cta-box{align-items:flex-start;flex-direction:column}
      .cta-box .btn{width:100%}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 30px)}
      .support-hero h1{font-size:39px}
      .hero-lead{font-size:15px}
      .hero-actions .btn{width:100%}
      .section{padding:68px 0}
      .section-head{display:block}
      .section-head p{margin-top:15px}
      .check-grid,.process-track{grid-template-columns:1fr}
      .process-step,.process-step:nth-child(2){border-right:0!important;border-bottom:1px solid #cfc7bc!important;margin:0;padding-right:0}
      .process-step:last-child{border-bottom:0!important}
      .issue-row{grid-template-columns:45px 1fr 18px;gap:12px}
      .issue-icon{width:38px;height:38px}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:8px}
    }

/* roulang page: category5 */
:root{
      --ink:#17151d;
      --ink-soft:#211e29;
      --panel:#282331;
      --panel-2:#302a3b;
      --paper:#f7f4ef;
      --paper-2:#eeeae3;
      --text:#f8f5ef;
      --dark-text:#26222c;
      --muted:#aaa4b1;
      --muted-dark:#746d79;
      --line:rgba(255,255,255,.12);
      --line-dark:#ded8cf;
      --coral:#ff765f;
      --coral-dark:#df554b;
      --lime:#c8ee72;
      --cyan:#7cddd3;
      --radius:18px;
      --radius-sm:11px;
      --shadow:0 18px 50px rgba(20,16,27,.16);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;background:var(--paper);color:var(--dark-text);line-height:1.7;-webkit-font-smoothing:antialiased}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    img{max-width:100%;display:block}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:var(--ink);color:var(--text);border-bottom:1px solid var(--line);position:relative;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;white-space:nowrap}
    .logo-mark{width:35px;height:35px;border-radius:10px;background:var(--coral);display:grid;place-items:center;color:var(--ink);font-size:18px;font-weight:900;transform:rotate(-7deg)}
    .logo-copy{font-weight:800;letter-spacing:.01em;font-size:16px}
    .logo-copy small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;font-weight:600;margin-top:-4px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 12px;color:#c9c3cc;font-size:13px;border-radius:8px;transition:.2s ease}
    .main-nav a:hover,.main-nav a:focus,.main-nav a.active{color:#fff;background:rgba(255,255,255,.09)}
    .main-nav a.active{box-shadow:inset 0 -2px var(--coral)}
    .header-download{background:var(--coral)!important;color:#1b161c!important;font-weight:800!important;padding:10px 17px!important;margin-left:8px}
    .header-download:hover{background:#ff907c!important;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:#fff;font-size:25px;padding:8px}
    .hero{background:var(--ink);color:var(--text);padding:78px 0 82px;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;width:430px;height:430px;border:1px solid rgba(200,238,114,.17);border-radius:50%;right:-120px;top:-240px}
    .hero:after{content:"";position:absolute;width:190px;height:190px;border:1px solid rgba(255,118,95,.2);border-radius:50%;right:120px;bottom:-125px}
    .hero-inner{position:relative;z-index:1;max-width:820px}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:12px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before,.section-kicker:before{content:"";width:22px;height:2px;background:currentColor}
    .hero h1{font-size:clamp(37px,5vw,64px);line-height:1.14;letter-spacing:-.045em;margin:22px 0 20px}
    .hero h1 span{color:var(--coral)}
    .hero-lead{font-size:17px;line-height:1.9;color:#c7c1cb;max-width:700px;margin:0}
    .hero-actions{display:flex;align-items:center;gap:13px;margin-top:30px;flex-wrap:wrap}
    .btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 21px;border-radius:10px;font-size:14px;font-weight:800;transition:.2s ease;border:1px solid transparent}
    .btn-primary{background:var(--coral);color:#1c171d}
    .btn-primary:hover{background:#ff917d;transform:translateY(-2px);box-shadow:0 9px 20px rgba(255,118,95,.2)}
    .btn-secondary{border-color:rgba(255,255,255,.25);color:#f5f1ec;background:rgba(255,255,255,.04)}
    .btn-secondary:hover{border-color:var(--lime);color:var(--lime)}
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:var(--coral);color:var(--ink)}
    .btn:focus,a:focus,button:focus{outline:3px solid rgba(124,221,211,.5);outline-offset:3px}
    .breadcrumb{padding:20px 0 0;font-size:13px;color:var(--muted-dark)}
    .breadcrumb a:hover{color:var(--coral-dark)}
    .section{padding:92px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:36px}
    .section-head h2{font-size:clamp(27px,3vw,40px);line-height:1.25;letter-spacing:-.035em;margin:10px 0 0}
    .section-head p{max-width:470px;color:var(--muted-dark);font-size:14px;margin:0}
    .paper-section{background:var(--paper)}
    .warm-section{background:var(--paper-2)}
    .news-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:22px;align-items:stretch}
    .lead-news{background:var(--panel);color:var(--text);border-radius:var(--radius);padding:34px;min-height:365px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
    .lead-news:after{content:"PG";position:absolute;right:22px;bottom:-45px;color:rgba(255,255,255,.055);font-size:180px;line-height:1;font-weight:900;letter-spacing:-.12em}
    .lead-news > *{position:relative;z-index:1}
    .tag{display:inline-flex;align-items:center;width:max-content;padding:5px 10px;border-radius:99px;background:rgba(200,238,114,.13);color:var(--lime);font-size:11px;font-weight:800}
    .lead-news h3{font-size:28px;line-height:1.38;max-width:590px;margin:24px 0 12px}
    .lead-news p{color:#c7c1cb;font-size:14px;max-width:590px;margin:0}
    .news-list{background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius);padding:10px 26px}
    .news-item{display:grid;grid-template-columns:84px 1fr 18px;gap:15px;align-items:center;padding:23px 0;border-bottom:1px solid #ebe6df;transition:.2s ease}
    .news-item:last-child{border-bottom:0}
    .news-item:hover{padding-left:7px}
    .news-date{font-size:12px;color:var(--muted-dark);font-weight:700}
    .news-item h3{font-size:16px;line-height:1.45;margin:0 0 4px}
    .news-item p{font-size:12px;color:var(--muted-dark);margin:0}
    .news-arrow{font-size:20px;color:var(--coral-dark)}
    .topic-section{background:#e9e4dc}
    .topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .topic-card{background:#fff;border-radius:var(--radius-sm);padding:26px;border:1px solid transparent;transition:.2s ease}
    .topic-card:hover{border-color:var(--coral);box-shadow:var(--shadow);transform:translateY(-4px)}
    .topic-icon{width:42px;height:42px;border-radius:12px;background:var(--ink);color:var(--lime);display:grid;place-items:center;font-weight:900;margin-bottom:22px}
    .topic-card h3{font-size:19px;margin:0 0 9px}
    .topic-card p{font-size:13px;color:var(--muted-dark);margin:0 0 20px}
    .topic-card a{font-size:13px;font-weight:800;color:var(--coral-dark)}
    .topic-card a:hover{color:var(--ink)}
    .timeline-section{background:var(--paper)}
    .timeline{max-width:920px;margin:0 auto;border-left:2px solid var(--coral);padding-left:34px}
    .timeline-row{position:relative;padding:0 0 34px}
    .timeline-row:last-child{padding-bottom:0}
    .timeline-row:before{content:"";position:absolute;left:-43px;top:7px;width:14px;height:14px;border-radius:50%;background:var(--coral);border:4px solid var(--paper)}
    .timeline-row strong{font-size:13px;color:var(--coral-dark);letter-spacing:.04em}
    .timeline-row h3{font-size:21px;margin:6px 0 6px}
    .timeline-row p{font-size:14px;color:var(--muted-dark);margin:0;max-width:700px}
    .guide-section{background:var(--ink);color:var(--text)}
    .guide-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:70px;align-items:start}
    .guide-section .section-head{display:block;margin:0}
    .guide-section .section-head p{color:var(--muted);margin-top:18px}
    .guide-list{border-top:1px solid var(--line)}
    .guide-row{display:grid;grid-template-columns:55px 1fr auto;gap:18px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line);transition:.2s}
    .guide-row:hover{padding-left:8px}
    .guide-no{font-size:24px;font-weight:900;color:var(--coral)}
    .guide-row h3{font-size:17px;margin:0 0 4px}
    .guide-row p{font-size:13px;color:var(--muted);margin:0}
    .guide-row a{color:var(--lime);font-size:13px;font-weight:800}
    .faq-section{background:var(--paper-2)}
    .faq-wrap{max-width:900px;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%;background:transparent;text-align:left;padding:21px 24px;font-weight:800;color:var(--dark-text);display:flex;justify-content:space-between;gap:18px}
    .faq-question:after{content:"+";color:var(--coral-dark);font-size:22px;line-height:1}
    .faq-answer{display:none;padding:0 24px 21px;color:var(--muted-dark);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question:after{content:"−"}
    .cta{padding:76px 0;background:var(--coral);color:var(--ink)}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta h2{font-size:clamp(27px,3.5vw,43px);line-height:1.25;margin:10px 0}
    .cta p{margin:0;max-width:650px;color:#4b2929;font-size:14px}
    .site-footer{background:var(--ink);color:var(--text);padding:62px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr 1fr;gap:35px}
    .footer-brand p{color:var(--muted);font-size:13px;max-width:290px;margin-top:20px}
    .footer-title{font-size:13px;font-weight:800;margin-bottom:15px;color:#fff}
    .footer-links{display:grid;gap:9px}
    .footer-links a{font-size:13px;color:var(--muted)}
    .footer-links a:hover{color:var(--lime)}
    .copyright{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:48px;padding-top:20px;color:#8e8893;font-size:11px}
    @media(max-width:1024px){
      .main-nav a{padding-left:8px;padding-right:8px;font-size:12px}
      .news-layout,.guide-layout{grid-template-columns:1fr}
      .guide-layout{gap:35px}
      .topic-grid{grid-template-columns:repeat(3,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 36px))}
      .site-header{height:70px}
      .menu-toggle{display:block}
      .main-nav{display:none;position:absolute;top:70px;left:0;right:0;padding:14px 18px 20px;background:var(--ink);border-top:1px solid var(--line);flex-direction:column;align-items:stretch;box-shadow:0 15px 30px rgba(0,0,0,.2)}
      .main-nav.open{display:flex}
      .main-nav a{padding:13px 14px}
      .header-download{margin:5px 0 0!important;text-align:center}
      .hero{padding:62px 0 68px}
      .hero h1{font-size:clamp(35px,10vw,52px)}
      .section{padding:70px 0}
      .section-head{display:block;margin-bottom:28px}
      .section-head p{margin-top:14px}
      .topic-grid{grid-template-columns:1fr}
      .cta-inner{display:block}
      .cta .btn{margin-top:24px}
      .footer-grid{grid-template-columns:1.3fr 1fr;gap:30px}
    }
    @media(max-width:520px){
      .hero-lead{font-size:15px}
      .hero-actions .btn{width:100%}
      .lead-news{padding:26px;min-height:340px}
      .lead-news h3{font-size:23px}
      .news-list{padding:4px 18px}
      .news-item{grid-template-columns:1fr 16px;gap:7px;padding:19px 0}
      .news-date{grid-column:1/-1}
      .guide-row{grid-template-columns:38px 1fr}
      .guide-row a{grid-column:2}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:7px}
    }

/* 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}