/* roulang page: index */
:root{
  --ink:#21152b;
  --ink-soft:#4d3d58;
  --muted:#766b80;
  --paper:#f6f1f7;
  --paper-deep:#ece4ef;
  --purple:#2d1d3b;
  --purple-2:#3d2851;
  --orange:#f26d4f;
  --orange-dark:#d9543b;
  --lime:#cbe65d;
  --mint:#92d9b6;
  --line:#d9ccdf;
  --white:#fffaff;
  --shadow:0 18px 42px rgba(45,29,59,.12);
  --shadow-small:0 8px 22px rgba(45,29,59,.09);
  --radius:18px;
  --radius-sm:12px;
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:var(--paper);
  font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;
  font-size:16px;
  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,input{font:inherit}
button{cursor:pointer}
.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:20;
  background:rgba(45,29,59,.97);
  color:#fff;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.navbar{height:76px;display:flex;align-items:center;gap:30px}
.brand{display:flex;align-items:center;gap:11px;min-width:245px}
.brand-mark{
  width:34px;height:34px;border-radius:11px 11px 11px 4px;
  background:var(--orange);position:relative;transform:rotate(-8deg);
}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--lime);border-radius:50%}
.brand-mark:before{width:8px;height:8px;left:8px;top:8px}
.brand-mark:after{width:6px;height:6px;right:7px;bottom:7px}
.brand-text{font-weight:800;letter-spacing:-.04em;font-size:17px;line-height:1.2}
.brand-text small{display:block;color:#cfc1d8;font-size:10px;font-weight:500;letter-spacing:.04em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
.nav-links a{
  color:#ded3e5;padding:9px 13px;border-radius:9px;font-size:14px;
  transition:.2s ease;
}
.nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.1)}
.nav-links a.active{box-shadow:inset 0 -2px var(--orange)}
.nav-cta,.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 20px;border:1px solid transparent;border-radius:11px;
  font-size:14px;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s,border-color .2s;
}
.nav-cta,.btn-primary{background:var(--orange);color:#fff;box-shadow:0 7px 16px rgba(242,109,79,.22)}
.nav-cta:hover,.btn-primary:hover{background:#ff8061;transform:translateY(-2px);box-shadow:0 10px 22px rgba(242,109,79,.3)}
.btn-secondary{background:var(--purple);color:#fff;border-color:#6d557c}
.btn-secondary:hover{background:#54366a;border-color:var(--orange);transform:translateY(-2px)}
.btn-light{background:var(--white);color:var(--purple);border-color:var(--line)}
.btn-light:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
.btn:focus,.nav-cta:focus,a:focus-visible,button:focus-visible{outline:3px solid rgba(203,230,93,.9);outline-offset:3px}
.menu-toggle{display:none;background:none;border:0;color:#fff;font-size:26px;padding:6px}
.hero{
  position:relative;overflow:hidden;background:var(--purple);color:#fff;
  padding:92px 0 74px;
}
.hero:before{
  content:"";position:absolute;width:540px;height:540px;right:-160px;top:-180px;
  border:1px solid rgba(203,230,93,.23);border-radius:50%;
  box-shadow:0 0 0 34px rgba(242,109,79,.05),0 0 0 78px rgba(203,230,93,.04);
}
.hero:after{
  content:"";position:absolute;width:230px;height:230px;left:-120px;bottom:-150px;
  background:var(--orange);opacity:.12;transform:rotate(35deg)
}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:70px;align-items:center;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:.08em
}
.eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;background:var(--orange);border-radius:5px}
.hero h1{font-size:clamp(34px,4.2vw,58px);line-height:1.18;letter-spacing:-.065em;margin:18px 0 22px;max-width:720px}
.hero-copy{color:#d8ccdf;max-width:610px;font-size:17px;margin:0 0 31px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-note{display:flex;gap:18px;flex-wrap:wrap;margin-top:30px;color:#bdafc7;font-size:13px}
.hero-note span{display:flex;align-items:center;gap:7px}
.hero-note i{width:7px;height:7px;background:var(--mint);border-radius:50%;display:inline-block}
.simulator-stage{min-height:395px;position:relative;display:flex;align-items:center;justify-content:center}
.arc{position:absolute;width:375px;height:375px;border:1px dashed rgba(203,230,93,.38);border-radius:50%;transform:rotate(22deg)}
.arc:after{content:"";position:absolute;top:18px;right:28px;width:12px;height:12px;background:var(--orange);border-radius:50%;box-shadow:0 0 0 8px rgba(242,109,79,.18)}
.screen{
  width:min(420px,100%);background:#f9f2f8;border:9px solid #17101f;
  border-radius:24px;box-shadow:22px 24px 0 rgba(0,0,0,.2);position:relative;z-index:2;
  transform:rotate(3deg);overflow:hidden;color:var(--ink)
}
.screen-top{height:43px;display:flex;align-items:center;justify-content:space-between;padding:0 15px;border-bottom:1px solid #e3d8e5;font-size:11px;color:var(--muted)}
.signal{display:flex;gap:4px;align-items:center}.signal b{display:block;width:5px;background:var(--mint);border-radius:3px}.signal b:nth-child(1){height:7px}.signal b:nth-child(2){height:10px}.signal b:nth-child(3){height:13px}
.screen-main{padding:18px}
.screen-title{font-size:20px;font-weight:800;margin-bottom:15px}
.screen-banner{height:105px;border-radius:14px;background:linear-gradient(135deg,#5d3a71,#2d1d3b);position:relative;overflow:hidden;padding:15px;color:#fff}
.screen-banner:after{content:"";position:absolute;width:150px;height:150px;border:18px solid rgba(242,109,79,.8);border-radius:50%;right:-30px;top:-52px}
.screen-banner strong{display:block;font-size:17px;position:relative;z-index:1}.screen-banner small{color:#d9c9e2;position:relative;z-index:1}
.screen-items{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:13px}
.mini-item{background:#eee5f0;border-radius:11px;padding:12px;font-size:12px}
.mini-cover{height:46px;background:var(--orange);border-radius:8px;margin-bottom:8px;position:relative;overflow:hidden}
.mini-cover:before{content:"";position:absolute;width:70px;height:70px;border:9px solid var(--lime);border-radius:50%;right:-13px;top:-16px}
.mini-cover.alt{background:#6b4c82}.mini-cover.alt:before{border-color:#ffad70}
.screen-status{margin-top:15px;background:#e3f3e9;color:#397256;border-radius:8px;text-align:center;font-size:11px;padding:6px}
.status-bar{background:#f0e7f2;border-bottom:1px solid var(--line)}
.status-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:18px 0}
.status-cell{padding:0 20px;border-right:1px solid #d7c9dc}.status-cell:first-child{padding-left:0}.status-cell:last-child{border:0}
.status-cell small{display:block;color:var(--muted);font-size:12px}.status-cell strong{font-size:18px;display:block;margin-top:2px}
.section{padding:88px 0}.section-tint{background:var(--paper-deep)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
.section h2{font-size:clamp(27px,3.2vw,40px);line-height:1.25;letter-spacing:-.045em;margin:10px 0 0}
.section-intro{max-width:520px;color:var(--muted);margin:0}
.entry-grid{display:grid;grid-template-columns:1.35fr .8fr;gap:18px}
.entry-main,.entry-side{border:1px solid var(--line);background:var(--white);border-radius:var(--radius);padding:29px;transition:.25s;box-shadow:var(--shadow-small)}
.entry-main:hover,.entry-side:hover,.game-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.entry-main{min-height:270px;position:relative;overflow:hidden}
.entry-main:after{content:"";position:absolute;right:-45px;bottom:-95px;width:260px;height:260px;border:28px solid #f3d4ca;border-radius:50%}
.entry-main h3,.entry-side h3{font-size:24px;margin:13px 0 8px;position:relative;z-index:1}
.entry-main p,.entry-side p{color:var(--muted);font-size:14px;max-width:470px}
.entry-side-wrap{display:grid;gap:18px}.entry-side{padding:23px}.entry-side h3{font-size:19px}.entry-link{font-weight:800;font-size:14px;color:var(--orange);display:inline-block;margin-top:9px}
.badge{display:inline-flex;background:#f6dfd9;color:#a84231;border-radius:30px;padding:4px 10px;font-size:11px;font-weight:800}
.badge.green{background:#e1f2e7;color:#397256}.badge.dark{background:#eadff0;color:#654b75}
.game-layout{display:grid;grid-template-columns:.42fr 1fr;gap:20px}
.game-feature{background:var(--purple);color:#fff;border-radius:var(--radius);padding:29px;min-height:330px;position:relative;overflow:hidden}
.game-feature:after{content:"PG";position:absolute;font-size:170px;font-weight:900;line-height:1;right:-14px;bottom:-20px;color:rgba(255,255,255,.07)}
.game-feature h3{font-size:28px;line-height:1.25;margin:17px 0 10px;position:relative;z-index:1}.game-feature p{color:#cec0d5;font-size:14px;position:relative;z-index:1}
.game-track{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}
.game-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-sm);padding:15px;transition:.25s}
.game-art{height:132px;border-radius:11px;background:#e8dbea;position:relative;overflow:hidden;margin-bottom:13px}
.game-art:before{content:"";position:absolute;width:160px;height:160px;border-radius:50%;border:22px solid var(--orange);left:-35px;top:-58px}
.game-art:after{content:"";position:absolute;width:74px;height:74px;background:var(--lime);transform:rotate(35deg);right:22px;bottom:-28px;border-radius:12px}
.game-art.two{background:#dce9e1}.game-art.two:before{border-color:#704b82}.game-art.three{background:#f4dfd4}.game-art.three:before{border-color:#b9dc64}.game-art.four{background:#ded8ed}.game-art.four:before{border-color:#ef7654}
.game-card h4{margin:0 0 3px;font-size:17px}.game-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.6}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:12px;font-size:12px}.text-link{color:var(--orange);font-weight:800}.text-link:hover{text-decoration:underline}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.step{padding:26px 24px 8px;border-right:1px solid var(--line);position:relative}.step:first-child{padding-left:0}.step:last-child{border:0}
.step-number{color:var(--orange);font-size:13px;font-weight:900}.step h3{font-size:18px;margin:10px 0 5px}.step p{color:var(--muted);font-size:14px;margin:0}
.download-panel{background:var(--purple);color:#fff;border-radius:24px;padding:38px 45px;display:grid;grid-template-columns:.95fr 1.05fr;gap:55px;align-items:center;overflow:hidden;position:relative}
.download-panel:before{content:"";position:absolute;width:300px;height:300px;border:1px solid rgba(203,230,93,.25);border-radius:50%;left:-120px;bottom:-170px}
.devices{height:245px;position:relative;display:flex;align-items:center;justify-content:center}
.device{background:#f7edf7;border:7px solid #130d1a;border-radius:22px;width:155px;height:230px;box-shadow:16px 16px 0 rgba(0,0,0,.18);padding:10px;transform:rotate(-8deg);position:relative;z-index:2}
.device:before{content:"";display:block;width:38px;height:5px;border-radius:5px;background:#d3c4d6;margin:2px auto 15px}.device-screen{height:178px;background:linear-gradient(145deg,#6c4a80,#f27052);border-radius:12px;position:relative;overflow:hidden}.device-screen:after{content:"";position:absolute;width:105px;height:105px;border:13px solid var(--lime);border-radius:50%;right:-35px;bottom:-27px}
.device-back{width:126px;height:190px;background:#6d4c7e;border:5px solid #130d1a;border-radius:19px;transform:rotate(13deg);position:absolute;left:37%;top:32px}
.download-panel h2{font-size:33px;margin:11px 0 8px;line-height:1.25}.download-panel p{color:#d6c9dd;margin:0 0 20px}.version{display:flex;gap:18px;flex-wrap:wrap;color:#b9a9c2;font-size:12px;margin-bottom:22px}.version b{color:var(--lime);font-weight:700}.download-actions{display:flex;gap:12px;flex-wrap:wrap}
.qr-box{border:1px dashed #8a7495;border-radius:10px;padding:8px 12px;color:#cbbbd2;font-size:12px;display:inline-flex;align-items:center;gap:9px}.qr{width:32px;height:32px;background:repeating-linear-gradient(45deg,#fff 0 3px,#bca9c3 3px 6px)}
.news-wrap{display:grid;grid-template-columns:1fr .34fr;gap:38px}
.news-list{border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:105px 1fr auto;gap:20px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line);transition:.2s}
.news-item:hover{padding-left:8px;background:rgba(255,255,255,.35)}.news-date{font-size:13px;color:var(--muted)}.news-date b{display:block;font-size:25px;color:var(--purple);line-height:1.1}.news-item h3{font-size:17px;margin:0 0 3px}.news-item p{font-size:13px;color:var(--muted);margin:0}.news-arrow{color:var(--orange);font-size:20px}
.news-aside{background:#e6d9e9;border-radius:var(--radius);padding:25px}.news-aside h3{margin:0 0 10px;font-size:19px}.news-aside p{color:var(--muted);font-size:14px;margin:0 0 20px}
.empty-state{padding:25px 0;color:var(--muted)}
.faq-grid{display:grid;grid-template-columns:.65fr 1.35fr;gap:70px}.faq-lead p{color:var(--muted);font-size:14px}.faq-list{border-top:1px solid var(--line)}
details{border-bottom:1px solid var(--line);padding:18px 0}summary{cursor:pointer;list-style:none;font-weight:750;padding-right:30px;position:relative}summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:2px;color:var(--orange);font-size:22px;top:-3px}details[open] summary:after{content:"−"}details p{color:var(--muted);font-size:14px;margin:10px 0 0;max-width:700px}
.cta{background:var(--purple-2);color:#fff;padding:45px 50px;border-radius:22px;display:flex;justify-content:space-between;align-items:center;gap:25px}.cta h2{margin:0 0 8px;font-size:29px}.cta p{margin:0;color:#d8ccdf;font-size:14px}.cta-actions{display:flex;gap:10px;flex-shrink:0}
.site-footer{background:#21152b;color:#fff;padding:53px 0 24px}.footer-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr 1fr;gap:35px}.footer-brand p{color:#bcaec4;font-size:13px;max-width:290px}.footer-title{font-size:14px;font-weight:800;margin:0 0 14px}.footer-links{display:grid;gap:8px}.footer-links a{color:#bcaec4;font-size:13px}.footer-links a:hover{color:var(--orange);text-decoration:underline}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:18px;color:#94849e;font-size:12px;display:flex;justify-content:space-between;gap:20px}
@media(max-width:1024px){.hero-grid{gap:35px}.nav-links a{padding-left:8px;padding-right:8px}.brand{min-width:220px}.download-panel{gap:25px}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}}
@media(max-width:768px){
  .container{width:min(100% - 32px,var(--container))}.navbar{height:68px;gap:12px}.brand{min-width:0;flex:1}.brand-text{font-size:15px}.brand-text small{display:none}.nav-cta{min-height:39px;padding:0 12px;font-size:12px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;left:16px;right:16px;top:76px;background:var(--purple);padding:12px;border-radius:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:12px 14px}.hero{padding:62px 0 48px}.hero-grid{grid-template-columns:1fr}.hero h1{font-size:36px}.simulator-stage{min-height:350px}.status-grid{grid-template-columns:repeat(2,1fr);gap:18px}.status-cell{padding:0 12px;border-right:0}.status-cell:nth-child(-n+2){border-bottom:1px solid var(--line);padding-bottom:14px}.section{padding:62px 0}.section-head{display:block}.section-intro{margin-top:13px}.entry-grid,.game-layout,.news-wrap,.faq-grid,.download-panel{grid-template-columns:1fr}.entry-side-wrap{grid-template-columns:repeat(2,1fr)}.game-track{grid-template-columns:repeat(2,1fr)}.download-panel{padding:34px 25px}.download-panel .devices{order:2}.steps{grid-template-columns:1fr 1fr;border-top:0}.step{padding:20px;border-top:1px solid var(--line)}.step:nth-child(odd){padding-left:0}.step:nth-child(even){border-right:0}.faq-grid{gap:25px}.cta{display:block;padding:34px 26px}.cta-actions{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}
}
@media(max-width:520px){
  .container{width:calc(100% - 28px)}.nav-cta{display:none}.hero h1{font-size:31px}.hero-copy{font-size:15px}.hero-actions .btn{width:100%}.simulator-stage{min-height:295px}.screen{border-width:7px;transform:rotate(2deg)}.arc{width:285px;height:285px}.status-grid{padding:15px 0}.status-cell strong{font-size:16px}.entry-side-wrap,.game-track{grid-template-columns:1fr}.entry-main,.entry-side{padding:23px}.game-feature{min-height:250px}.game-art{height:150px}.steps{grid-template-columns:1fr}.step,.step:nth-child(even),.step:nth-child(odd){padding:18px 0;border-right:0}.download-panel h2{font-size:27px}.devices{transform:scale(.88);margin:-10px 0}.download-actions .btn{width:100%}.news-item{grid-template-columns:68px 1fr;gap:12px}.news-arrow{display:none}.news-item h3{font-size:15px}.news-item p{display:none}.news-date b{font-size:21px}.footer-grid{grid-template-columns:1fr 1fr;gap:27px 18px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
}

/* roulang page: article */
:root{
      --ink:#21152b;
      --ink-soft:#4d3d58;
      --muted:#766b80;
      --paper:#f6f1f7;
      --paper-deep:#ece4ef;
      --purple:#2d1d3b;
      --purple-2:#3d2851;
      --orange:#f26d4f;
      --orange-dark:#d9543b;
      --lime:#cbe65d;
      --mint:#92d9b6;
      --line:#d9ccdf;
      --white:#fffaff;
      --shadow:0 18px 42px rgba(45,29,59,.12);
      --shadow-small:0 8px 22px rgba(45,29,59,.09);
      --radius:18px;
      --radius-sm:12px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;color:var(--ink);background:var(--paper);
      font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;
      font-size:16px;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,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:20;background:rgba(45,29,59,.97);
      color:#fff;border-bottom:1px solid rgba(255,255,255,.1)
    }
    .navbar{height:76px;display:flex;align-items:center;gap:30px}
    .brand{display:flex;align-items:center;gap:11px;min-width:245px}
    .brand-mark{
      width:34px;height:34px;border-radius:11px 11px 11px 4px;
      background:var(--orange);position:relative;transform:rotate(-8deg);flex:none
    }
    .brand-mark:before,.brand-mark:after{
      content:"";position:absolute;background:var(--lime);border-radius:50%
    }
    .brand-mark:before{width:8px;height:8px;left:8px;top:8px}
    .brand-mark:after{width:6px;height:6px;right:7px;bottom:7px}
    .brand-text{font-weight:800;letter-spacing:-.04em;font-size:17px;line-height:1.2}
    .brand-text small{display:block;color:#cfc1d8;font-size:10px;font-weight:500;letter-spacing:.04em;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-links a{
      color:#ded3e5;padding:9px 13px;border-radius:9px;font-size:14px;
      transition:.2s ease
    }
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.1)}
    .nav-links a.active{box-shadow:inset 0 -2px var(--orange)}
    .nav-cta,.btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:46px;padding:0 20px;border:1px solid transparent;border-radius:11px;
      font-size:14px;font-weight:700;
      transition:transform .2s,background .2s,box-shadow .2s,border-color .2s
    }
    .nav-cta,.btn-primary{
      background:var(--orange);color:#fff;box-shadow:0 7px 16px rgba(242,109,79,.22)
    }
    .nav-cta:hover,.btn-primary:hover{
      background:#ff8061;color:#fff;transform:translateY(-2px);
      box-shadow:0 10px 22px rgba(242,109,79,.3)
    }
    .btn-secondary{background:var(--purple);color:#fff;border-color:#6d557c}
    .btn-secondary:hover{background:#54366a;color:#fff;border-color:var(--orange);transform:translateY(-2px)}
    .btn-light{background:var(--white);color:var(--purple);border-color:var(--line)}
    .btn-light:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
    .btn:focus,.nav-cta:focus,a:focus-visible,button:focus-visible{
      outline:3px solid rgba(203,230,93,.9);outline-offset:3px
    }
    .menu-toggle{display:none;background:none;border:0;color:#fff;font-size:26px;padding:6px}
    .article-hero{
      position:relative;overflow:hidden;background:var(--purple);color:#fff;padding:70px 0 62px
    }
    .article-hero:before{
      content:"";position:absolute;width:500px;height:500px;right:-180px;top:-220px;
      border:1px solid rgba(203,230,93,.25);border-radius:50%;
      box-shadow:0 0 0 35px rgba(242,109,79,.06),0 0 0 80px rgba(203,230,93,.04)
    }
    .article-hero:after{
      content:"";position:absolute;width:210px;height:210px;left:-110px;bottom:-145px;
      border:25px solid rgba(242,109,79,.18);border-radius:50%
    }
    .breadcrumb-line{
      position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:9px;
      color:#cdbfd5;font-size:13px;margin-bottom:25px
    }
    .breadcrumb-line a:hover{color:var(--lime)}
    .breadcrumb-line .current{color:#fff;max-width:550px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .article-hero h1{
      position:relative;z-index:1;max-width:900px;margin:0;font-size:clamp(32px,5vw,58px);
      line-height:1.2;letter-spacing:-.06em
    }
    .article-meta{
      position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:10px 24px;
      color:#cdbfd5;font-size:14px;margin-top:25px
    }
    .meta-pill{display:inline-flex;align-items:center;gap:7px}
    .meta-pill i{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--mint)}
    .article-area{padding:74px 0 92px}
    .article-layout{
      display:grid;grid-template-columns:minmax(0,820px) 280px;gap:54px;align-items:start
    }
    .article-card{
      background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
      padding:clamp(26px,5vw,58px);box-shadow:var(--shadow-small);min-width:0
    }
    .article-content{font-size:17px;color:var(--ink-soft)}
    .article-content h2{
      color:var(--ink);font-size:30px;line-height:1.35;letter-spacing:-.04em;
      margin:40px 0 17px;padding-left:15px;border-left:4px solid var(--orange)
    }
    .article-content h3{color:var(--purple);font-size:22px;margin:30px 0 12px}
    .article-content p{margin:0 0 20px}
    .article-content ul,.article-content ol{padding-left:25px;margin:16px 0 25px}
    .article-content li{margin:8px 0}
    .article-content blockquote{
      margin:28px 0;padding:18px 22px;border-left:4px solid var(--lime);
      background:#f1ebf3;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--purple)
    }
    .article-content img{border-radius:var(--radius-sm);margin:26px auto}
    .article-content table{width:100%;border-collapse:collapse;margin:25px 0;font-size:15px}
    .article-content th,.article-content td{border:1px solid var(--line);padding:11px 13px;text-align:left}
    .article-content th{background:#eee5f0;color:var(--purple)}
    .article-content hr{border:0;border-top:1px solid var(--line);margin:36px 0}
    .empty-state{
      padding:42px 20px;text-align:center;background:#f1ebf3;border:1px dashed #c9b9d0;
      border-radius:var(--radius-sm);color:var(--muted)
    }
    .empty-state strong{display:block;color:var(--purple);font-size:22px;margin-bottom:10px}
    .side-stack{display:grid;gap:16px;position:sticky;top:102px}
    .side-card{
      background:var(--white);border:1px solid var(--line);border-radius:var(--radius-sm);
      padding:23px;box-shadow:var(--shadow-small)
    }
    .side-card.dark{background:var(--purple);color:#fff;border-color:var(--purple)}
    .side-card h2{font-size:19px;line-height:1.4;margin:0 0 12px}
    .side-card p{font-size:14px;color:var(--muted);margin:0 0 17px}
    .side-card.dark p{color:#d9ccdf}
    .side-label,.section-kicker{
      display:inline-flex;align-items:center;gap:8px;color:var(--orange);
      font-size:12px;font-weight:800;letter-spacing:.08em
    }
    .side-label{margin-bottom:12px}
    .side-label:before,.section-kicker:before{content:"";width:22px;height:3px;background:var(--lime);border-radius:5px}
    .side-card.dark .side-label{color:var(--lime)}
    .side-links{display:grid;gap:2px}
    .side-links a{
      padding:9px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--ink-soft);
      transition:.2s
    }
    .side-links a:last-child{border-bottom:0}
    .side-links a:hover{color:var(--orange);padding-left:4px}
    .article-footer{
      display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
      margin-top:36px;padding-top:23px;border-top:1px solid var(--line)
    }
    .article-footer a{color:var(--purple);font-weight:700;font-size:14px}
    .article-footer a:hover{color:var(--orange);text-decoration:underline}
    .related-section{background:var(--paper-deep);padding:70px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:25px}
    .section-head h2{font-size:clamp(27px,3.2vw,40px);line-height:1.25;letter-spacing:-.045em;margin:10px 0 0}
    .section-intro{max-width:520px;color:var(--muted);margin:0}
    .related-list{display:grid;gap:10px;max-width:900px}
    .related-item{
      display:flex;align-items:center;gap:20px;background:var(--white);border:1px solid var(--line);
      border-radius:var(--radius-sm);padding:17px 20px;transition:.2s
    }
    .related-item:hover{transform:translateX(4px);border-color:var(--orange);box-shadow:var(--shadow-small)}
    .related-index{width:35px;height:35px;border-radius:10px;background:#f5ddd7;color:var(--orange-dark);display:grid;place-items:center;font-weight:800;flex:none}
    .related-item strong{display:block;line-height:1.45}
    .related-item small{display:block;color:var(--muted);font-size:12px;margin-top:3px}
    .cta-section{padding:70px 0}
    .cta-box{
      background:var(--purple);color:#fff;border-radius:var(--radius);padding:39px 45px;
      display:flex;justify-content:space-between;align-items:center;gap:25px;position:relative;overflow:hidden
    }
    .cta-box:after{content:"PG";position:absolute;right:25px;bottom:-38px;font-size:150px;font-weight:900;color:rgba(255,255,255,.06)}
    .cta-box h2,.cta-box p,.cta-box .btn{position:relative;z-index:1}
    .cta-box h2{margin:0 0 8px;font-size:30px;letter-spacing:-.04em}
    .cta-box p{color:#d9ccdf;margin:0;max-width:600px;font-size:14px}
    .site-footer{background:#21152b;color:#fff;padding:57px 0 23px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .footer-brand .brand{min-width:0;margin-bottom:17px}
    .footer-brand p{color:#bcaec6;font-size:14px;max-width:310px;margin:0}
    .footer-title{font-size:14px;margin:8px 0 13px;color:var(--lime)}
    .footer-links{display:grid;gap:6px}
    .footer-links a{color:#cfc1d8;font-size:13px;transition:.2s}
    .footer-links a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--orange)}
    .footer-bottom{
      display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
      border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:19px;
      color:#9f91a9;font-size:12px
    }
    @media(max-width:1024px){
      .navbar{gap:14px}.brand{min-width:210px}.nav-links a{padding:8px 8px;font-size:13px}
      .article-layout{grid-template-columns:minmax(0,1fr) 245px;gap:25px}
      .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
      .footer-grid>div:last-child{display:none}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .navbar{height:68px}.brand{min-width:0}.brand-text{font-size:15px}.brand-text small{font-size:9px}
      .nav-links{
        display:none;position:absolute;left:16px;right:16px;top:73px;background:var(--purple-2);
        padding:12px;border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch
      }
      .nav-links.open{display:flex}.nav-links a{padding:12px 14px}
      .nav-cta{min-height:40px;padding:0 12px;font-size:12px;margin-left:auto}
      .menu-toggle{display:block}
      .article-hero{padding:48px 0 45px}.article-hero h1{font-size:36px}
      .article-area{padding:45px 0 60px}.article-layout{display:block}
      .side-stack{position:static;margin-top:22px;grid-template-columns:1fr 1fr}
      .cta-box{display:block;padding:30px 25px}.cta-box .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:27px}.footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      .brand-text small{display:none}.nav-cta{display:none}
      .article-hero h1{font-size:30px}.article-meta{gap:8px 15px}
      .article-card{padding:24px 19px}.article-content{font-size:16px}
      .article-content h2{font-size:25px}.article-content h3{font-size:20px}
      .side-stack{grid-template-columns:1fr}.related-item{gap:12px;padding:14px}
      .cta-box h2{font-size:25px}.footer-grid{grid-template-columns:1fr}
      .footer-grid>div:last-child{display:block}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}
    }

/* roulang page: category1 */
:root{
      --ink:#21152b;--ink-soft:#4d3d58;--muted:#766b80;--paper:#f6f1f7;
      --paper-deep:#ece4ef;--purple:#2d1d3b;--purple-2:#3d2851;
      --orange:#f26d4f;--orange-dark:#d9543b;--lime:#cbe65d;--mint:#92d9b6;
      --line:#d9ccdf;--white:#fffaff;--shadow:0 18px 42px rgba(45,29,59,.12);
      --shadow-small:0 8px 22px rgba(45,29,59,.09);--radius:18px;--radius-sm:12px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--paper);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;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,input{font:inherit}button{cursor:pointer}.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(45,29,59,.97);color:#fff;border-bottom:1px solid rgba(255,255,255,.1)}
    .navbar{height:76px;display:flex;align-items:center;gap:30px}
    .brand{display:flex;align-items:center;gap:11px;min-width:245px}.brand-mark{width:34px;height:34px;border-radius:11px 11px 11px 4px;background:var(--orange);position:relative;transform:rotate(-8deg)}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--lime);border-radius:50%}.brand-mark:before{width:8px;height:8px;left:8px;top:8px}.brand-mark:after{width:6px;height:6px;right:7px;bottom:7px}
    .brand-text{font-weight:800;letter-spacing:-.04em;font-size:17px;line-height:1.2}.brand-text small{display:block;color:#cfc1d8;font-size:10px;font-weight:500;letter-spacing:.04em;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}.nav-links a{color:#ded3e5;padding:9px 13px;border-radius:9px;font-size:14px;transition:.2s ease}
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.1)}.nav-links a.active{box-shadow:inset 0 -2px var(--orange)}
    .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border:1px solid transparent;border-radius:11px;font-size:14px;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s,border-color .2s}
    .nav-cta,.btn-primary{background:var(--orange);color:#fff;box-shadow:0 7px 16px rgba(242,109,79,.22)}.nav-cta:hover,.btn-primary:hover{background:#ff8061;color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(242,109,79,.3)}
    .btn-secondary{background:var(--purple);color:#fff;border-color:#6d557c}.btn-secondary:hover{background:#54366a;color:#fff;border-color:var(--orange);transform:translateY(-2px)}
    .btn-light{background:var(--white);color:var(--purple);border-color:var(--line)}.btn-light:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
    .btn:focus,.nav-cta:focus,a:focus-visible,button:focus-visible{outline:3px solid rgba(203,230,93,.9);outline-offset:3px}
    .menu-toggle{display:none;background:none;border:0;color:#fff;font-size:26px;padding:6px}
    .hero{position:relative;overflow:hidden;background:var(--purple);color:#fff;padding:82px 0 64px}.hero:before{content:"";position:absolute;width:540px;height:540px;right:-160px;top:-180px;border:1px solid rgba(203,230,93,.23);border-radius:50%;box-shadow:0 0 0 34px rgba(242,109,79,.05),0 0 0 78px rgba(203,230,93,.04)}
    .hero:after{content:"";position:absolute;width:230px;height:230px;left:-120px;bottom:-150px;background:var(--orange);opacity:.12;transform:rotate(35deg)}
    .hero-grid{display:grid;grid-template-columns:1fr .9fr;gap:70px;align-items:center;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:.08em}.eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;background:var(--orange);border-radius:5px}
    .hero h1{font-size:clamp(34px,4.2vw,58px);line-height:1.18;letter-spacing:-.065em;margin:18px 0 22px;max-width:690px}.hero-copy{color:#d8ccdf;max-width:610px;font-size:17px;margin:0 0 31px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.hero-note{display:flex;gap:18px;flex-wrap:wrap;margin-top:30px;color:#bdafc7;font-size:13px}.hero-note span{display:flex;align-items:center;gap:7px}.hero-note i{width:7px;height:7px;background:var(--mint);border-radius:50%;display:inline-block}
    .device-card{background:#f8f1f8;border:8px solid #5a4268;border-radius:28px;padding:18px;color:var(--ink);box-shadow:0 24px 50px rgba(0,0,0,.25);transform:rotate(2deg)}.device-top{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);padding-bottom:18px}.device-dot{width:8px;height:8px;border-radius:50%;background:var(--mint);display:inline-block;margin-right:5px}
    .device-screen{background:#e9dfea;border-radius:16px;padding:20px}.device-screen strong{font-size:20px;display:block;margin-bottom:4px}.screen-caption{font-size:12px;color:var(--muted)}.screen-orbit{height:105px;border:1px solid #c8b3ce;border-radius:50%;margin:22px auto 16px;width:190px;position:relative}.screen-orbit:before{content:"PG";position:absolute;inset:22px 42px;background:var(--purple);color:var(--lime);border-radius:13px;display:grid;place-items:center;font-weight:900;font-size:24px}.screen-list{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}.screen-list span{background:var(--white);padding:10px;border-radius:9px;font-size:12px}
    .section{padding:86px 0}.section-tint{background:var(--paper-deep)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}.section h2{font-size:clamp(27px,3.2vw,40px);line-height:1.25;letter-spacing:-.045em;margin:10px 0 0}.section-intro{max-width:530px;color:var(--muted);margin:0}
    .feature-grid{display:grid;grid-template-columns:1.3fr .85fr;gap:18px}.feature-card{border:1px solid var(--line);background:var(--white);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-small);transition:.25s}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.feature-card.large{min-height:270px;background:var(--purple);color:#fff;position:relative;overflow:hidden}.feature-card.large:after{content:"PG";position:absolute;right:22px;bottom:-34px;font-size:180px;font-weight:900;color:rgba(255,255,255,.06)}.feature-card h3{font-size:24px;line-height:1.3;margin:13px 0 9px}.feature-card p{color:var(--muted);font-size:14px;max-width:520px}.feature-card.large p{color:#d8ccdf}.feature-side{display:grid;gap:18px}.badge{display:inline-flex;background:#f6dfd9;color:#a84231;border-radius:30px;padding:4px 10px;font-size:11px;font-weight:800}.badge.green{background:#e1f2e7;color:#397256}.badge.dark{background:#eadff0;color:#654b75}
    .device-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.device-item{padding:25px;border:1px solid var(--line);border-radius:16px;background:var(--white)}.device-icon{width:44px;height:44px;border-radius:13px;background:#f5d8d0;color:var(--orange-dark);display:grid;place-items:center;font-weight:900;font-size:20px}.device-item h3{font-size:19px;margin:15px 0 6px}.device-item p{font-size:14px;color:var(--muted);margin:0}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.step{padding:28px 24px 28px 0;position:relative}.step:not(:last-child){margin-right:28px;border-right:1px solid var(--line)}.step-number{color:var(--orange);font-size:30px;font-weight:900;line-height:1}.step h3{font-size:18px;margin:13px 0 5px}.step p{font-size:14px;color:var(--muted);margin:0}
    .app-panel{display:grid;grid-template-columns:.8fr 1.2fr;gap:45px;align-items:center;background:var(--purple);color:#fff;border-radius:var(--radius);padding:38px 44px;overflow:hidden}.app-preview{height:260px;display:flex;align-items:center;justify-content:center;position:relative}.app-phone{width:155px;height:245px;border:7px solid #725982;border-radius:25px;background:#f8f1f8;padding:13px;color:var(--ink);transform:rotate(-6deg);box-shadow:20px 18px 0 rgba(242,109,79,.22)}.app-phone b{display:block;font-size:16px;margin:10px 0}.app-phone span{display:block;height:35px;background:#eadfea;border-radius:8px;margin:8px 0}.app-panel h2{margin:10px 0 12px;color:#fff}.app-panel p{color:#d8ccdf}.app-meta{display:flex;gap:10px;flex-wrap:wrap;color:#d8ccdf;font-size:13px;margin:20px 0}.app-meta span{border:1px solid #685375;border-radius:8px;padding:6px 10px}.download-actions{display:flex;gap:12px;flex-wrap:wrap}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:50px}.faq-list{border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;border:0;background:none;text-align:left;padding:20px 38px 20px 0;color:var(--ink);font-weight:800;position:relative}.faq-question:after{content:"+";position:absolute;right:5px;font-size:24px;color:var(--orange);top:14px}.faq-item.open .faq-question:after{content:"−"}.faq-answer{max-height:0;overflow:hidden;color:var(--muted);font-size:14px;transition:max-height .3s ease}.faq-item.open .faq-answer{max-height:150px}.faq-answer p{margin:0 0 18px}
    .cta{background:var(--purple-2);color:#fff;padding:48px 0}.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}.cta h2{font-size:32px;line-height:1.3;margin:0 0 8px}.cta p{margin:0;color:#d8ccdf}.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
    .site-footer{background:#21152b;color:#fff;padding:55px 0 24px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}.footer-brand p{color:#bcaec5;font-size:14px;max-width:290px;margin-top:18px}.footer-title{font-size:15px;margin:4px 0 15px}.footer-links{display:grid;gap:8px}.footer-links a{color:#bcaec5;font-size:14px;transition:.2s}.footer-links a:hover{color:var(--orange);text-decoration:underline;text-underline-offset:4px}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:20px;display:flex;justify-content:space-between;gap:15px;color:#97889f;font-size:12px}
    @media(max-width:1024px){.hero-grid{gap:35px}.nav-links a{padding:8px 8px}.brand{min-width:220px}.app-panel{gap:25px;padding:32px}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 34px))}.navbar{height:68px}.brand{min-width:0}.brand-text{font-size:15px}.nav-cta{min-height:40px;padding:0 13px;font-size:12px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;left:17px;right:17px;top:68px;background:var(--purple);padding:12px;border:1px solid #594365;border-radius:0 0 14px 14px;flex-direction:column;align-items:stretch}.nav-links.show{display:flex}.nav-links a{padding:12px 14px}.hero{padding:62px 0 52px}.hero-grid,.feature-grid,.faq-layout,.app-panel{grid-template-columns:1fr}.hero h1{font-size:39px}.simulator-stage{min-height:330px}.section{padding:62px 0}.section-head{display:block}.section-intro{margin-top:14px}.device-row{grid-template-columns:1fr}.steps{grid-template-columns:1fr;border:0}.step,.step:not(:last-child){margin:0;padding:22px 0 22px 50px;border-right:0;border-bottom:1px solid var(--line)}.step:before{content:"";position:absolute;left:15px;top:0;bottom:-1px;border-left:1px solid var(--line)}.step:last-child{border-bottom:0}.step-number{position:absolute;left:0;top:22px}.app-panel{padding:30px 24px}.app-preview{order:2}.cta-inner{display:block}.cta-actions{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:7px}}
    @media(max-width:520px){.container{width:calc(100% - 28px)}.brand-text small{font-size:8px}.nav-cta{display:none}.hero h1{font-size:32px}.hero-copy{font-size:15px}.hero-actions .btn{width:100%}.device-card{transform:none}.screen-orbit{width:160px}.feature-card{padding:24px}.section h2{font-size:29px}.app-preview{height:230px}.footer-grid{grid-template-columns:1fr}.footer-brand{margin-bottom:8px}}

/* roulang page: category2 */
:root{
      --ink:#21152b;
      --ink-soft:#4d3d58;
      --muted:#766b80;
      --paper:#f6f1f7;
      --paper-deep:#ece4ef;
      --purple:#2d1d3b;
      --purple-2:#3d2851;
      --orange:#f26d4f;
      --orange-dark:#d9543b;
      --lime:#cbe65d;
      --mint:#92d9b6;
      --line:#d9ccdf;
      --white:#fffaff;
      --shadow:0 18px 42px rgba(45,29,59,.12);
      --shadow-small:0 8px 22px rgba(45,29,59,.09);
      --radius:18px;
      --radius-sm:12px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;color:var(--ink);background:var(--paper);
      font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;
      font-size:16px;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,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:20;background:rgba(45,29,59,.97);
      color:#fff;border-bottom:1px solid rgba(255,255,255,.1)
    }
    .navbar{height:76px;display:flex;align-items:center;gap:30px}
    .brand{display:flex;align-items:center;gap:11px;min-width:245px}
    .brand-mark{
      width:34px;height:34px;border-radius:11px 11px 11px 4px;
      background:var(--orange);position:relative;transform:rotate(-8deg);flex:none
    }
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--lime);border-radius:50%}
    .brand-mark:before{width:8px;height:8px;left:8px;top:8px}
    .brand-mark:after{width:6px;height:6px;right:7px;bottom:7px}
    .brand-text{font-weight:800;letter-spacing:-.04em;font-size:17px;line-height:1.2}
    .brand-text small{display:block;color:#cfc1d8;font-size:10px;font-weight:500;letter-spacing:.04em;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-links a{
      color:#ded3e5;padding:9px 13px;border-radius:9px;font-size:14px;transition:.2s ease
    }
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.1)}
    .nav-links a.active{box-shadow:inset 0 -2px var(--orange)}
    .nav-cta,.btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:46px;padding:0 20px;border:1px solid transparent;border-radius:11px;
      font-size:14px;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s,border-color .2s
    }
    .nav-cta,.btn-primary{background:var(--orange);color:#fff;box-shadow:0 7px 16px rgba(242,109,79,.22)}
    .nav-cta:hover,.btn-primary:hover{background:#ff8061;transform:translateY(-2px);box-shadow:0 10px 22px rgba(242,109,79,.3)}
    .btn-secondary{background:var(--purple);color:#fff;border-color:#6d557c}
    .btn-secondary:hover{background:#54366a;border-color:var(--orange);transform:translateY(-2px)}
    .btn-light{background:var(--white);color:var(--purple);border-color:var(--line)}
    .btn-light:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
    .btn:active,.nav-cta:active{transform:translateY(1px)}
    .btn:focus,.nav-cta:focus,a:focus-visible,button:focus-visible{outline:3px solid rgba(203,230,93,.9);outline-offset:3px}
    .menu-toggle{display:none;background:none;border:0;color:#fff;font-size:26px;padding:6px}
    .hero{
      position:relative;overflow:hidden;background:var(--purple);color:#fff;padding:82px 0 68px
    }
    .hero:before{
      content:"";position:absolute;width:540px;height:540px;right:-160px;top:-180px;
      border:1px solid rgba(203,230,93,.23);border-radius:50%;
      box-shadow:0 0 0 34px rgba(242,109,79,.05),0 0 0 78px rgba(203,230,93,.04)
    }
    .hero:after{
      content:"";position:absolute;width:230px;height:230px;left:-120px;bottom:-150px;
      background:var(--orange);opacity:.12;transform:rotate(35deg)
    }
    .hero-grid{display:grid;grid-template-columns:1fr .9fr;gap:72px;align-items:center;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:.08em
    }
    .eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;background:var(--orange);border-radius:5px}
    .hero h1{font-size:clamp(35px,4.4vw,58px);line-height:1.18;letter-spacing:-.065em;margin:18px 0 20px;max-width:680px}
    .hero-copy{color:#d8ccdf;max-width:620px;font-size:17px;margin:0 0 29px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-note{display:flex;gap:18px;flex-wrap:wrap;margin-top:28px;color:#bdafc7;font-size:13px}
    .hero-note span{display:flex;align-items:center;gap:7px}
    .hero-note i{width:7px;height:7px;background:var(--mint);border-radius:50%;display:inline-block}
    .game-board{
      position:relative;min-height:360px;border:1px solid rgba(255,255,255,.16);
      border-radius:26px;background:#3a2750;padding:24px;box-shadow:0 24px 50px rgba(13,7,20,.25);
      transform:rotate(2deg)
    }
    .game-board:before{content:"";position:absolute;inset:16px;border:1px solid rgba(203,230,93,.2);border-radius:18px;pointer-events:none}
    .board-top{display:flex;justify-content:space-between;align-items:center;position:relative;z-index:1}
    .board-title{font-size:13px;color:#d8ccdf;font-weight:700}
    .online{display:inline-flex;align-items:center;gap:7px;background:rgba(146,217,182,.13);color:var(--mint);border-radius:20px;padding:5px 10px;font-size:11px}
    .online:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--mint)}
    .orbit{height:225px;margin:24px auto 14px;width:225px;border:1px dashed rgba(203,230,93,.5);border-radius:50%;position:relative;display:flex;align-items:center;justify-content:center}
    .orbit:before,.orbit:after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(242,109,79,.65)}
    .orbit:before{inset:23px}.orbit:after{inset:52px;border-color:rgba(203,230,93,.4)}
    .orbit-core{width:73px;height:73px;border-radius:20px;background:var(--orange);display:grid;place-items:center;color:#fff;font-weight:900;font-size:22px;box-shadow:0 0 0 9px rgba(242,109,79,.13)}
    .orbit-dot{position:absolute;width:12px;height:12px;border-radius:50%;background:var(--lime)}
    .dot-a{top:18px;left:105px}.dot-b{right:13px;top:105px;background:var(--orange)}.dot-c{bottom:23px;left:35px}
    .board-bottom{display:flex;justify-content:space-between;align-items:end;color:#cfc1d8;font-size:12px;position:relative;z-index:1}
    .board-bottom strong{display:block;color:#fff;font-size:15px}
    .section{padding:86px 0}
    .section-tint{background:var(--paper-deep)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
    .section h2{font-size:clamp(28px,3.2vw,40px);line-height:1.25;letter-spacing:-.045em;margin:10px 0 0}
    .section-intro{max-width:540px;color:var(--muted);margin:0}
    .filter-row{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:24px}
    .filter{
      border:1px solid var(--line);background:var(--white);color:var(--ink-soft);
      padding:8px 15px;border-radius:30px;font-size:13px;transition:.2s
    }
    .filter:hover,.filter.active{background:var(--purple);color:#fff;border-color:var(--purple)}
    .showcase{display:grid;grid-template-columns:1.35fr .65fr;gap:18px}
    .feature-card,.side-card,.info-panel,.device-panel{
      background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
      box-shadow:var(--shadow-small);transition:.25s
    }
    .feature-card:hover,.side-card:hover,.info-panel:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .feature-card{padding:30px;min-height:350px;position:relative;overflow:hidden}
    .feature-card:after{content:"";position:absolute;width:230px;height:230px;right:-50px;bottom:-90px;border:26px solid #f2d5cd;border-radius:50%}
    .feature-card h3{font-size:29px;margin:17px 0 8px;position:relative;z-index:1}
    .feature-card p,.side-card p{color:var(--muted);font-size:14px;max-width:580px;position:relative;z-index:1}
    .feature-meta{display:flex;gap:8px;flex-wrap:wrap;margin:21px 0}
    .badge{display:inline-flex;background:#f6dfd9;color:#a84231;border-radius:30px;padding:4px 10px;font-size:11px;font-weight:800}
    .badge.green{background:#e1f2e7;color:#397256}
    .badge.dark{background:#eadff0;color:#654b75}
    .feature-visual{height:92px;display:flex;align-items:end;gap:8px;position:relative;z-index:1}
    .feature-visual span{display:block;border-radius:8px 8px 3px 3px;background:var(--purple-2);width:12%;height:40%}
    .feature-visual span:nth-child(2){height:66%;background:var(--orange)}
    .feature-visual span:nth-child(3){height:88%;background:var(--lime)}
    .feature-visual span:nth-child(4){height:54%;background:var(--purple-2)}
    .feature-visual span:nth-child(5){height:74%;background:var(--orange)}
    .side-stack{display:grid;gap:18px}
    .side-card{padding:26px;min-height:166px}
    .side-card h3{font-size:21px;margin:12px 0 5px}
    .icon-square{width:38px;height:38px;border-radius:12px;background:#f6dfd9;color:var(--orange-dark);display:grid;place-items:center;font-weight:900}
    .topics{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .topic-card{background:var(--purple);color:#fff;border-radius:var(--radius);padding:25px;min-height:190px;position:relative;overflow:hidden}
    .topic-card:nth-child(2){background:#4c315d}.topic-card:nth-child(3){background:#633b52}
    .topic-number{font-size:12px;color:var(--lime);font-weight:800}
    .topic-card h3{font-size:21px;line-height:1.35;margin:24px 0 8px}
    .topic-card p{font-size:13px;color:#ded3e5;margin:0}
    .topic-card:after{content:"";position:absolute;width:90px;height:90px;border:1px solid rgba(255,255,255,.2);border-radius:50%;right:-20px;bottom:-25px}
    .split-section{display:grid;grid-template-columns:.86fr 1.14fr;gap:60px;align-items:start}
    .info-panel{padding:31px}
    .info-panel h3{font-size:24px;margin:0 0 12px}
    .check-list{list-style:none;margin:22px 0 0;padding:0}
    .check-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
    .check-list li:last-child{border-bottom:0}
    .check-list b{color:var(--orange);font-size:18px;line-height:1.4}
    .steps{display:grid;gap:14px}
    .step{display:grid;grid-template-columns:54px 1fr;gap:16px;align-items:start;padding:18px 0;border-bottom:1px solid var(--line)}
    .step:last-child{border-bottom:0}
    .step-no{width:44px;height:44px;border-radius:14px;background:var(--purple);color:var(--lime);display:grid;place-items:center;font-weight:900}
    .step h3{font-size:18px;margin:0 0 3px}.step p{font-size:14px;color:var(--muted);margin:0}
    .faq-wrap{max-width:900px;margin:0 auto}
    .faq-item{background:var(--white);border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;background:none;border:0;color:var(--ink);padding:20px 23px;font-weight:800}
    .faq-question span:last-child{font-size:22px;color:var(--orange);transition:.2s}
    .faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 23px;color:var(--muted);font-size:14px}
    .faq-item.open .faq-answer{max-height:180px;padding-bottom:20px}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta{
      background:var(--purple);color:#fff;border-radius:var(--radius);padding:43px 48px;
      display:flex;justify-content:space-between;align-items:center;gap:30px;position:relative;overflow:hidden
    }
    .cta:after{content:"";position:absolute;right:8%;top:-95px;width:220px;height:220px;border:1px solid rgba(203,230,93,.25);border-radius:50%}
    .cta h2{font-size:30px;margin:0 0 8px;position:relative;z-index:1}.cta p{color:#d8ccdf;margin:0;position:relative;z-index:1}
    .cta .hero-actions{position:relative;z-index:1;flex:none}
    .site-footer{background:#1f1429;color:#fff;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.45fr .8fr .8fr .8fr;gap:35px;padding-bottom:42px}
    .footer-brand p{color:#bdb0c6;max-width:300px;font-size:13px;margin-top:20px}
    .footer-title{font-size:14px;margin:5px 0 16px;color:var(--lime)}
    .footer-links{display:grid;gap:8px}.footer-links a{color:#cfc1d8;font-size:13px;transition:.2s}
    .footer-links a:hover{color:var(--orange);padding-left:3px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;display:flex;justify-content:space-between;gap:20px;color:#998ba2;font-size:12px}
    @media(max-width:1024px){
      .navbar{gap:16px}.brand{min-width:210px}.nav-links a{padding:8px 8px;font-size:13px}
      .hero-grid{gap:40px}.showcase{grid-template-columns:1fr}.side-stack{grid-template-columns:1fr 1fr}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .navbar{height:68px}.brand{min-width:0}.brand-text{font-size:15px}.brand-text small{font-size:9px}
      .nav-links{display:none;position:absolute;top:68px;left:0;right:0;padding:14px 16px 20px;background:var(--purple);border-top:1px solid rgba(255,255,255,.1);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}.nav-links a{padding:12px 14px}.nav-cta{display:none}.menu-toggle{display:block;margin-left:auto}
      .hero{padding:63px 0 55px}.hero-grid,.split-section{grid-template-columns:1fr}.hero h1{font-size:38px}.hero-copy{font-size:15px}
      .game-board{max-width:520px;margin:8px auto 0;transform:none}.section{padding:64px 0}.section-head{display:block}.section-intro{margin-top:14px}
      .topics{grid-template-columns:1fr}.side-stack{grid-template-columns:1fr}.cta{display:block;padding:34px 27px}.cta .hero-actions{margin-top:23px}
      .footer-grid{grid-template-columns:1fr 1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
    }
    @media(max-width:520px){
      .hero h1{font-size:32px}.hero-actions .btn{width:100%}.hero-note{gap:10px;display:grid}
      .game-board{padding:18px;min-height:320px}.orbit{width:190px;height:190px}
      .feature-card,.side-card,.info-panel{padding:23px}.topics{gap:12px}
      .footer-grid{grid-template-columns:1fr;gap:23px}.footer-brand p{margin-top:14px}
      .cta h2{font-size:25px}.cta .btn{width:100%}
    }

/* roulang page: category3 */
:root{
      --ink:#21152b;
      --ink-soft:#4d3d58;
      --muted:#766b80;
      --paper:#f6f1f7;
      --paper-deep:#ece4ef;
      --purple:#2d1d3b;
      --purple-2:#3d2851;
      --purple-3:#51366a;
      --orange:#f26d4f;
      --orange-dark:#d9543b;
      --lime:#cbe65d;
      --mint:#92d9b6;
      --line:#d9ccdf;
      --white:#fffaff;
      --shadow:0 18px 42px rgba(45,29,59,.12);
      --shadow-small:0 8px 22px rgba(45,29,59,.09);
      --radius:18px;
      --radius-sm:12px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;color:var(--ink);background:var(--paper);
      font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;
      font-size:16px;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,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:50;background:rgba(45,29,59,.97);
      color:#fff;border-bottom:1px solid rgba(255,255,255,.1);backdrop-filter:blur(12px);
    }
    .navbar{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:245px}
    .brand-mark{
      width:34px;height:34px;border-radius:11px 11px 11px 4px;background:var(--orange);
      position:relative;transform:rotate(-8deg);flex:0 0 auto;
    }
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--lime);border-radius:50%}
    .brand-mark:before{width:8px;height:8px;left:8px;top:8px}
    .brand-mark:after{width:6px;height:6px;right:7px;bottom:7px}
    .brand-text{font-weight:800;letter-spacing:-.04em;font-size:17px;line-height:1.2}
    .brand-text small{display:block;color:#cfc1d8;font-size:10px;font-weight:500;letter-spacing:.04em;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-links a{
      color:#ded3e5;padding:9px 13px;border-radius:9px;font-size:14px;
      transition:.2s ease;white-space:nowrap;
    }
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.1)}
    .nav-links a.active{box-shadow:inset 0 -2px var(--orange)}
    .nav-cta,.btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;
      padding:0 20px;border:1px solid transparent;border-radius:11px;font-size:14px;
      font-weight:700;transition:transform .2s,background .2s,box-shadow .2s,border-color .2s,color .2s;
    }
    .nav-cta,.btn-primary{background:var(--orange);color:#fff;box-shadow:0 7px 16px rgba(242,109,79,.22)}
    .nav-cta:hover,.btn-primary:hover{background:#ff8061;color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(242,109,79,.3)}
    .btn-secondary{background:var(--purple);color:#fff;border-color:#6d557c}
    .btn-secondary:hover{background:#54366a;color:#fff;border-color:var(--orange);transform:translateY(-2px)}
    .btn-light{background:var(--white);color:var(--purple);border-color:var(--line)}
    .btn-light:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
    .btn:active,.nav-cta:active{transform:translateY(0)}
    .btn:focus,.nav-cta:focus,a:focus-visible,button:focus-visible{outline:3px solid rgba(203,230,93,.9);outline-offset:3px}
    .menu-toggle{display:none;background:none;border:0;color:#fff;font-size:26px;padding:6px;line-height:1}
    .mobile-menu{display:none}

    .page-hero{
      position:relative;overflow:hidden;color:#fff;background:var(--purple);
      padding:74px 0 68px;
    }
    .page-hero:before{
      content:"";position:absolute;width:580px;height:580px;right:-180px;top:-310px;
      border:1px solid rgba(203,230,93,.24);border-radius:50%;
      box-shadow:0 0 0 36px rgba(242,109,79,.05),0 0 0 82px rgba(203,230,93,.04);
    }
    .page-hero:after{
      content:"";position:absolute;width:280px;height:280px;left:-155px;bottom:-185px;
      background:var(--orange);opacity:.12;transform:rotate(32deg)
    }
    .crumbs{position:relative;z-index:1;display:flex;align-items:center;flex-wrap:wrap;gap:8px;color:#cdbfd5;font-size:13px;margin-bottom:29px}
    .crumbs a{transition:color .2s}
    .crumbs a:hover{color:var(--lime)}
    .crumbs b{font-weight:400;opacity:.55}
    .hero-layout{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}
    .eyebrow,.section-kicker{
      display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:12px;font-weight:800;letter-spacing:.08em
    }
    .eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;background:var(--orange);border-radius:5px}
    h1{font-size:clamp(36px,4.4vw,58px);line-height:1.18;letter-spacing:-.065em;margin:17px 0 20px}
    .hero-copy{max-width:620px;margin:0;color:#dacfe0;font-size:17px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:29px}
    .hero-micro{display:flex;flex-wrap:wrap;gap:17px;margin-top:27px;color:#c7b9d0;font-size:13px}
    .hero-micro span{display:flex;align-items:center;gap:7px}
    .hero-micro i{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--mint)}

    .access-panel{
      position:relative;background:#fffaff;color:var(--ink);border:1px solid rgba(255,255,255,.5);
      border-radius:22px;padding:16px;box-shadow:0 24px 54px rgba(13,7,20,.26);transform:rotate(1.5deg);
    }
    .access-panel:before{
      content:"";position:absolute;width:66px;height:66px;border:12px solid var(--lime);border-radius:50%;
      right:-20px;top:-24px;opacity:.75;
    }
    .window-bar{display:flex;align-items:center;gap:6px;padding:0 3px 13px;border-bottom:1px solid #e7dde9}
    .window-dot{width:8px;height:8px;border-radius:50%;background:#dfb5ab}
    .window-dot:nth-child(2){background:#e9d590}.window-dot:nth-child(3){background:#9fd7b6}
    .window-title{margin-left:8px;color:var(--muted);font-size:12px;font-weight:700}
    .demo-screen{display:grid;grid-template-columns:74px 1fr;gap:12px;padding-top:14px;min-height:278px}
    .screen-rail{border-radius:12px;background:var(--purple);padding:12px 9px;display:flex;flex-direction:column;gap:11px}
    .rail-symbol{height:31px;border-radius:8px;background:rgba(255,255,255,.1);position:relative}
    .rail-symbol.active{background:var(--orange)}
    .rail-symbol:after{content:"";position:absolute;left:10px;right:10px;top:14px;height:3px;border-radius:4px;background:rgba(255,255,255,.65)}
    .screen-content{background:#f1eaf3;border-radius:13px;padding:15px}
    .screen-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
    .screen-top strong{font-size:14px}.online-state{font-size:11px;color:#347359;font-weight:800;background:#ddf1e6;border-radius:20px;padding:4px 8px}
    .content-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:10px;height:187px}
    .display-card{position:relative;overflow:hidden;border-radius:11px;background:var(--purple-2);padding:16px;color:#fff}
    .display-card:before{content:"";position:absolute;width:125px;height:125px;right:-38px;bottom:-51px;border:18px solid rgba(203,230,93,.5);border-radius:50%}
    .display-card span{position:relative;z-index:1;display:block;font-size:11px;color:#d8cde0}
    .display-card b{position:relative;z-index:1;display:block;font-size:25px;line-height:1.2;margin-top:8px}
    .display-card em{position:absolute;left:16px;bottom:17px;font-style:normal;font-size:11px;color:var(--lime)}
    .quick-list{display:flex;flex-direction:column;gap:9px}
    .quick-item{flex:1;background:#fffaff;border:1px solid #e2d7e5;border-radius:10px;padding:10px;font-size:11px;font-weight:700;color:var(--ink-soft)}
    .quick-item small{display:block;font-size:10px;color:var(--muted);font-weight:400;margin-top:1px}

    .section{padding:88px 0}
    .section-tint{background:var(--paper-deep)}
    .section-dark{background:var(--purple);color:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:31px}
    .section h2{font-size:clamp(27px,3.2vw,40px);line-height:1.25;letter-spacing:-.045em;margin:10px 0 0}
    .section-intro{max-width:530px;color:var(--muted);margin:0}
    .section-dark .section-intro{color:#cdbfd5}
    .section-dark .section-kicker{color:var(--lime)}

    .path-band{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white);box-shadow:var(--shadow-small)}
    .path-item{min-height:202px;padding:25px 23px;border-right:1px solid var(--line);position:relative;transition:background .2s,transform .2s}
    .path-item:last-child{border-right:0}
    .path-item:hover{background:#fff7f4}
    .path-number{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:#ebdff0;color:var(--purple);font-size:14px;font-weight:900}
    .path-item.active .path-number{color:#fff;background:var(--orange)}
    .path-item h3{font-size:18px;line-height:1.35;margin:16px 0 7px}
    .path-item p{margin:0;color:var(--muted);font-size:13px;line-height:1.65}
    .path-arrow{position:absolute;right:-12px;top:29px;z-index:2;width:24px;height:24px;border-radius:50%;background:var(--purple);color:#fff;text-align:center;line-height:24px;font-size:13px}

    .device-layout{display:grid;grid-template-columns:.84fr 1.16fr;gap:34px;align-items:stretch}
    .device-tabs{display:flex;flex-direction:column;gap:10px}
    .device-tab{
      width:100%;text-align:left;border:1px solid var(--line);background:var(--white);border-radius:var(--radius-sm);
      padding:18px;display:flex;gap:13px;align-items:flex-start;transition:.2s;
    }
    .device-tab:hover{border-color:var(--orange);transform:translateX(3px)}
    .device-tab.active{background:var(--purple);border-color:var(--purple);color:#fff;box-shadow:var(--shadow-small)}
    .device-icon{
      flex:0 0 38px;width:38px;height:38px;border-radius:10px;background:#eadff0;color:var(--purple);
      display:grid;place-items:center;font-size:18px;font-weight:800;
    }
    .device-tab.active .device-icon{background:var(--orange);color:#fff}
    .device-tab strong{display:block;font-size:15px;line-height:1.4}
    .device-tab small{display:block;color:var(--muted);font-size:12px;line-height:1.5;margin-top:3px}
    .device-tab.active small{color:#d6c9df}
    .device-stage{position:relative;overflow:hidden;border-radius:var(--radius);background:#3b274c;padding:31px;color:#fff;box-shadow:var(--shadow)}
    .device-stage:before{content:"";position:absolute;width:340px;height:340px;right:-110px;top:-160px;border:34px solid rgba(203,230,93,.11);border-radius:50%}
    .device-stage h3{position:relative;font-size:26px;line-height:1.3;margin:0 0 9px}
    .device-stage>p{position:relative;color:#d2c4da;max-width:540px;margin:0}
    .device-window{position:relative;margin-top:24px;padding:14px;border:1px solid rgba(255,255,255,.18);border-radius:15px;background:rgba(17,10,25,.36)}
    .device-window-top{display:flex;justify-content:space-between;color:#d7c9df;font-size:11px;padding:1px 2px 11px}
    .device-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:12px}
    .device-preview{min-height:157px;border-radius:11px;padding:18px;background:linear-gradient(145deg,#f36f52,#d95755);position:relative;overflow:hidden}
    .device-preview:after{content:"";position:absolute;width:128px;height:128px;right:-37px;bottom:-49px;border-radius:50%;border:20px solid rgba(203,230,93,.55)}
    .device-preview strong{position:relative;z-index:1;display:block;font-size:22px}.device-preview span{position:relative;z-index:1;display:block;font-size:11px;margin-top:6px}
    .device-menu{display:grid;gap:8px}.device-menu div{border-radius:8px;background:rgba(255,255,255,.1);padding:10px;font-size:11px;color:#e1d6e7}
    .device-menu div:first-child{border-left:3px solid var(--lime)}
    .compatibility{position:relative;display:flex;gap:10px;flex-wrap:wrap;margin-top:19px}
    .compatibility span{font-size:12px;border:1px solid rgba(255,255,255,.2);border-radius:30px;padding:5px 10px;color:#e5dbe9}

    .tips-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:19px}
    .notice-card,.check-card{border-radius:var(--radius);border:1px solid var(--line);background:var(--white);box-shadow:var(--shadow-small)}
    .notice-card{padding:31px;position:relative;overflow:hidden}
    .notice-card:after{content:"";position:absolute;right:-56px;bottom:-61px;width:190px;height:190px;border:25px solid #f3ded7;border-radius:50%}
    .notice-card h3,.check-card h3{font-size:23px;line-height:1.35;margin:0 0 11px}
    .notice-card p{position:relative;z-index:1;color:var(--muted);margin:0;max-width:620px}
    .notice-list{position:relative;z-index:1;list-style:none;padding:0;margin:21px 0 0;display:grid;gap:11px}
    .notice-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px}
    .notice-list i{display:inline-grid;place-items:center;flex:0 0 21px;width:21px;height:21px;border-radius:50%;background:#e2f1e8;color:#387354;font-size:12px;font-style:normal;margin-top:2px}
    .check-card{background:var(--purple);border-color:var(--purple);padding:30px;color:#fff}
    .check-card p{color:#d2c4da;font-size:14px;margin:0}
    .check-rows{margin-top:19px;border-top:1px solid rgba(255,255,255,.14)}
    .check-row{display:flex;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.14);font-size:13px}
    .check-row span:last-child{color:var(--lime);font-weight:800;white-space:nowrap}

    .entry-split{display:grid;grid-template-columns:1.24fr .76fr;gap:20px}
    .trial-card{position:relative;overflow:hidden;border-radius:var(--radius);padding:34px;background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow-small)}
    .trial-card:before{content:"试玩";position:absolute;right:-14px;bottom:-38px;color:#f0e7f2;font-weight:900;font-size:132px;letter-spacing:-.12em}
    .trial-card>*{position:relative;z-index:1}
    .trial-card h3{font-size:28px;line-height:1.3;margin:14px 0 9px}
    .trial-card p{max-width:570px;color:var(--muted);margin:0}
    .trial-card .hero-actions{margin-top:23px}
    .side-links{display:grid;gap:20px}
    .side-link-card{display:block;background:var(--purple-2);border-radius:var(--radius);padding:24px;color:#fff;min-height:144px;transition:.22s;position:relative;overflow:hidden}
    .side-link-card:nth-child(2){background:#d9624a}
    .side-link-card:after{content:"↗";position:absolute;right:20px;top:17px;width:29px;height:29px;border-radius:50%;display:grid;place-items:center;border:1px solid rgba(255,255,255,.36);font-weight:700}
    .side-link-card:hover{color:#fff;transform:translateY(-3px);box-shadow:var(--shadow)}
    .side-link-card small{color:var(--lime);font-weight:800;font-size:11px;letter-spacing:.06em}
    .side-link-card:nth-child(2) small{color:#fff0be}
    .side-link-card h3{font-size:19px;line-height:1.35;margin:9px 35px 0 0}
    .side-link-card p{font-size:12px;color:#ded2e3;margin:5px 24px 0 0;line-height:1.55}
    .side-link-card:nth-child(2) p{color:#fff0ec}

    .faq-wrap{display:grid;grid-template-columns:.75fr 1.25fr;gap:58px;align-items:start}
    .faq-copy{position:sticky;top:110px}
    .faq-copy h2{font-size:clamp(29px,3.2vw,40px);line-height:1.25;letter-spacing:-.045em;margin:10px 0 14px}
    .faq-copy p{color:var(--muted);margin:0 0 21px}
    .faq-list{display:grid;gap:10px}
    .faq-item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;transition:border-color .2s,box-shadow .2s}
    .faq-item:has([open]){border-color:#cf9c90;box-shadow:var(--shadow-small)}
    .faq-item summary{list-style:none;cursor:pointer;padding:19px 55px 19px 20px;position:relative;font-size:16px;font-weight:800;line-height:1.45}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";position:absolute;right:19px;top:16px;width:27px;height:27px;border-radius:8px;background:#eee2f0;color:var(--purple);display:grid;place-items:center;font-size:21px;font-weight:400;transition:.2s}
    .faq-item[open] summary:after{content:"−";background:var(--orange);color:#fff}
    .faq-answer{padding:0 20px 20px;color:var(--muted);font-size:14px;animation:reveal .25s ease}
    @keyframes reveal{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}

    .cta-box{position:relative;overflow:hidden;background:var(--purple);border-radius:var(--radius);padding:48px 50px;display:flex;align-items:center;justify-content:space-between;gap:30px;color:#fff}
    .cta-box:before{content:"";position:absolute;width:285px;height:285px;border:38px solid rgba(203,230,93,.1);border-radius:50%;right:-55px;top:-162px}
    .cta-box:after{content:"";position:absolute;width:160px;height:160px;background:var(--orange);opacity:.11;transform:rotate(34deg);right:135px;bottom:-110px}
    .cta-box>div{position:relative;z-index:1}.cta-box h2{font-size:clamp(27px,3vw,39px);line-height:1.25;margin:0 0 10px;letter-spacing:-.045em}
    .cta-box p{color:#d4c7db;margin:0;max-width:670px}.cta-box .hero-actions{margin:0;flex:0 0 auto}
    .cta-box .btn-secondary{background:rgba(255,255,255,.08)}

    .site-footer{background:#1f1429;color:#d5c9dc;padding:59px 0 0}
    .footer-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr 1fr;gap:32px;padding-bottom:43px}
    .footer-brand .brand{color:#fff;min-width:0}.footer-brand p{max-width:330px;color:#ab9db5;font-size:13px;margin:18px 0 0}
    .footer-title{font-size:14px;color:#fff;margin:4px 0 15px;font-weight:800}
    .footer-links{display:grid;gap:9px}.footer-links a{font-size:13px;color:#b9acbf;transition:.2s}
    .footer-links a:hover{color:var(--orange);text-decoration:underline;text-underline-offset:4px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;display:flex;justify-content:space-between;gap:18px;color:#95889e;font-size:12px}

    @media(max-width:1024px){
      .navbar{gap:14px}.brand{min-width:205px}.nav-links a{padding:8px 9px;font-size:13px}.nav-cta{padding:0 14px}
      .hero-layout{gap:32px}.section{padding:72px 0}.device-layout{gap:22px}.faq-wrap{gap:35px}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .navbar{height:68px;gap:12px}.brand{min-width:0}.brand-text{font-size:16px}.brand-text small{font-size:9px}
      .nav-links{display:none}.menu-toggle{display:block;margin-left:auto}.nav-cta{min-height:40px;padding:0 13px;font-size:12px}
      .mobile-menu{background:#24172f;border-top:1px solid rgba(255,255,255,.1);padding:10px 16px 16px}
      .mobile-menu.open{display:grid}.mobile-menu a{color:#e2d8e7;padding:11px 12px;border-radius:9px;font-size:14px}.mobile-menu a:hover,.mobile-menu a.active{background:rgba(255,255,255,.1);color:#fff}
      .page-hero{padding:53px 0 55px}.crumbs{margin-bottom:22px}.hero-layout{grid-template-columns:1fr;gap:38px}.hero-copy{font-size:16px}.access-panel{max-width:560px;width:100%;margin:0 auto;transform:none}
      .path-band{grid-template-columns:1fr 1fr}.path-item:nth-child(2){border-right:0}.path-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.path-arrow{display:none}
      .device-layout,.tips-grid,.entry-split,.faq-wrap{grid-template-columns:1fr}.device-tabs{display:grid;grid-template-columns:1fr 1fr}.faq-copy{position:static}
      .section-head{display:block}.section-intro{margin-top:15px}.footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:26px}.footer-brand{grid-column:1/-1}.cta-box{padding:37px 30px;display:block}.cta-box .hero-actions{margin-top:22px}
    }
    @media(max-width:520px){
      body{font-size:15px}.container{width:calc(100% - 28px)}.nav-cta{display:none}.navbar{height:64px}.brand-mark{width:31px;height:31px}.brand-text small{display:none}
      .page-hero{padding:42px 0 47px}h1{font-size:35px}.hero-actions,.cta-box .hero-actions{display:grid;grid-template-columns:1fr}.hero-actions .btn{width:100%}
      .demo-screen{grid-template-columns:56px 1fr}.screen-rail{padding:10px 7px}.screen-content{padding:11px}.content-grid{grid-template-columns:1fr;height:auto}.quick-list{display:none}
      .section{padding:58px 0}.path-band{grid-template-columns:1fr}.path-item,.path-item:nth-child(2){border-right:0;border-bottom:1px solid var(--line);min-height:auto}.path-item:last-child{border-bottom:0}
      .device-tabs{grid-template-columns:1fr}.device-inner{grid-template-columns:1fr}.device-menu{grid-template-columns:repeat(3,1fr)}.device-menu div{font-size:10px;padding:8px}.device-stage{padding:23px}
      .notice-card,.check-card,.trial-card{padding:24px}.trial-card h3{font-size:24px}.side-link-card{min-height:130px}.faq-item summary{font-size:15px;padding-left:17px}.faq-answer{padding:0 17px 18px}
      .cta-box{padding:30px 23px}.footer-grid{grid-template-columns:1fr 1fr;gap:27px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block}.footer-bottom span+span{margin-top:5px}
    }

/* roulang page: category4 */
:root{
      --ink:#21152b;--ink-soft:#4d3d58;--muted:#766b80;--paper:#f6f1f7;
      --paper-deep:#ece4ef;--purple:#2d1d3b;--purple-2:#3d2851;
      --orange:#f26d4f;--orange-dark:#d9543b;--lime:#cbe65d;--mint:#92d9b6;
      --line:#d9ccdf;--white:#fffaff;--shadow:0 18px 42px rgba(45,29,59,.12);
      --shadow-small:0 8px 22px rgba(45,29,59,.09);--radius:18px;--radius-sm:12px;
      --container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--paper);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;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,input{font:inherit}button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(45,29,59,.97);color:#fff;border-bottom:1px solid rgba(255,255,255,.1)}
    .navbar{height:76px;display:flex;align-items:center;gap:30px}
    .brand{display:flex;align-items:center;gap:11px;min-width:245px}
    .brand-mark{width:34px;height:34px;border-radius:11px 11px 11px 4px;background:var(--orange);position:relative;transform:rotate(-8deg)}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--lime);border-radius:50%}
    .brand-mark:before{width:8px;height:8px;left:8px;top:8px}.brand-mark:after{width:6px;height:6px;right:7px;bottom:7px}
    .brand-text{font-weight:800;letter-spacing:-.04em;font-size:17px;line-height:1.2}
    .brand-text small{display:block;color:#cfc1d8;font-size:10px;font-weight:500;letter-spacing:.04em;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-links a{color:#ded3e5;padding:9px 13px;border-radius:9px;font-size:14px;transition:.2s ease}
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.1)}
    .nav-links a.active{box-shadow:inset 0 -2px var(--orange)}
    .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border:1px solid transparent;border-radius:11px;font-size:14px;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s,border-color .2s}
    .nav-cta,.btn-primary{background:var(--orange);color:#fff;box-shadow:0 7px 16px rgba(242,109,79,.22)}
    .nav-cta:hover,.btn-primary:hover{background:#ff8061;color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(242,109,79,.3)}
    .btn-secondary{background:var(--purple);color:#fff;border-color:#6d557c}.btn-secondary:hover{background:#54366a;color:#fff;border-color:var(--orange);transform:translateY(-2px)}
    .btn-light{background:var(--white);color:var(--purple);border-color:var(--line)}.btn-light:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
    .btn:focus,.nav-cta:focus,a:focus-visible,button:focus-visible{outline:3px solid rgba(203,230,93,.9);outline-offset:3px}
    .menu-toggle{display:none;background:none;border:0;color:#fff;font-size:26px;padding:6px}
    .page-hero{position:relative;overflow:hidden;background:var(--purple);color:#fff;padding:78px 0 68px}
    .page-hero:before{content:"";position:absolute;width:510px;height:510px;right:-170px;top:-230px;border:1px solid rgba(203,230,93,.25);border-radius:50%;box-shadow:0 0 0 34px rgba(242,109,79,.05),0 0 0 78px rgba(203,230,93,.04)}
    .hero-layout{position:relative;z-index:1;display:grid;grid-template-columns:1fr .9fr;gap:70px;align-items:center}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:12px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;background:var(--orange);border-radius:5px}
    .page-hero h1{font-size:clamp(34px,4vw,57px);line-height:1.2;letter-spacing:-.065em;margin:18px 0 20px}
    .hero-copy{color:#d8ccdf;max-width:610px;font-size:17px;margin:0 0 30px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-note{display:flex;gap:18px;flex-wrap:wrap;margin-top:28px;color:#bdafc7;font-size:13px}.hero-note span{display:flex;align-items:center;gap:7px}.hero-note i{width:7px;height:7px;background:var(--mint);border-radius:50%;display:inline-block}
    .device-scene{min-height:330px;display:flex;align-items:center;justify-content:center;position:relative}
    .device{width:268px;height:390px;border:10px solid #160d22;border-radius:32px;background:#efe6f1;box-shadow:0 25px 50px rgba(0,0,0,.3);padding:12px;transform:rotate(5deg)}
    .device-top{width:80px;height:17px;border-radius:20px;background:#160d22;margin:-4px auto 16px}
    .app-screen{height:320px;border-radius:18px;background:linear-gradient(145deg,#56326b,#2d1d3b);padding:18px;color:#fff}
    .app-screen h3{font-size:17px;margin:6px 0 18px}.screen-line{height:9px;width:76%;background:rgba(255,255,255,.22);border-radius:6px;margin:9px 0}
    .screen-tile{height:82px;border-radius:13px;background:#f26d4f;margin-top:16px;padding:13px;font-size:12px;font-weight:700}.screen-tile span{display:block;color:#ffe2d9;font-size:10px;margin-top:4px}
    .orbit{position:absolute;width:340px;height:340px;border:1px solid rgba(203,230,93,.35);border-radius:50%;transform:rotate(-22deg)}.orbit:after{content:"PG";position:absolute;right:-12px;top:54px;color:var(--lime);font-weight:900;font-size:20px}
    .status-bar{background:#fffaff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-small)}.status-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:20px 0}.status-item{padding:0 22px;border-right:1px solid var(--line)}.status-item:first-child{padding-left:0}.status-item:last-child{border:0}.status-label{display:block;color:var(--muted);font-size:12px}.status-value{font-size:18px;font-weight:800;color:var(--purple)}
    .section{padding:86px 0}.section-tint{background:var(--paper-deep)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:32px}.section h2{font-size:clamp(28px,3.2vw,40px);line-height:1.25;letter-spacing:-.045em;margin:10px 0 0}.section-intro{max-width:550px;color:var(--muted);margin:0}
    .download-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:20px;align-items:stretch}.download-card,.info-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-small)}
    .download-card{padding:34px;position:relative;overflow:hidden}.download-card:after{content:"";position:absolute;width:250px;height:250px;border:25px solid #f6d7ce;border-radius:50%;right:-100px;bottom:-110px}
    .download-card h3{font-size:28px;line-height:1.3;margin:13px 0 10px;position:relative;z-index:1}.download-card p{color:var(--muted);max-width:500px;position:relative;z-index:1}
    .tag-row{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0}.badge{display:inline-flex;background:#f6dfd9;color:#a84231;border-radius:30px;padding:4px 10px;font-size:11px;font-weight:800}.badge.green{background:#e1f2e7;color:#397256}.badge.dark{background:#eadff0;color:#654b75}
    .version-box{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;margin:22px 0;font-size:13px}.version-box strong{font-size:16px}.download-actions{display:flex;gap:10px;flex-wrap:wrap;position:relative;z-index:2}
    .feature-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding:28px}.feature{padding:21px;border:1px solid var(--line);border-radius:14px;background:#fff}.feature strong{display:block;font-size:18px;margin-bottom:5px}.feature p{color:var(--muted);font-size:14px;margin:0}.feature-icon{width:34px;height:34px;border-radius:10px;background:var(--purple);color:var(--lime);display:grid;place-items:center;font-weight:800;margin-bottom:13px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}.step{padding:28px 24px 10px 0;position:relative}.step:not(:last-child){margin-right:24px;border-right:1px solid var(--line)}.step-number{color:var(--orange);font-size:14px;font-weight:900}.step h3{font-size:19px;margin:10px 0 5px}.step p{color:var(--muted);font-size:14px;margin:0;max-width:220px}
    .device-table{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}.info-card{padding:28px}.info-card h3{font-size:22px;margin:0 0 16px}.device-row{display:flex;justify-content:space-between;gap:15px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}.device-row:last-child{border-bottom:0}.device-row span{color:var(--muted)}
    .faq-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:70px}.faq-intro p{color:var(--muted)}.faq-list{border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;background:none;border:0;padding:20px 0;text-align:left;display:flex;justify-content:space-between;align-items:center;color:var(--ink);font-weight:800}.faq-question span:last-child{font-size:24px;color:var(--orange);transition:.25s}.faq-answer{max-height:0;overflow:hidden;color:var(--muted);font-size:14px;transition:max-height .3s ease}.faq-answer p{margin:0 35px 20px 0}.faq-item.open .faq-answer{max-height:150px}.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta{background:var(--purple);color:#fff;border-radius:var(--radius);padding:42px 48px;display:flex;justify-content:space-between;align-items:center;gap:25px}.cta h2{font-size:30px;line-height:1.3;margin:0 0 8px}.cta p{color:#cfc1d8;margin:0}.cta-actions{display:flex;gap:10px;flex-shrink:0}
    .site-footer{background:#21152b;color:#fff;padding:55px 0 25px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}.footer-brand p{color:#bcaec5;font-size:13px;max-width:280px;margin-top:18px}.footer-title{font-size:14px;margin:3px 0 15px}.footer-links{display:grid;gap:8px}.footer-links a{color:#bcaec5;font-size:13px;transition:.2s}.footer-links a:hover{color:var(--lime);padding-left:3px}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:20px;color:#95869e;font-size:12px;display:flex;justify-content:space-between;gap:20px}
    @media(max-width:1024px){.nav-links a{padding:8px 8px}.brand{min-width:205px}.hero-layout{gap:35px}.section{padding:70px 0}.faq-grid{gap:35px}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 32px))}.navbar{height:68px;gap:10px}.brand{min-width:0;flex:1}.brand-text{font-size:15px}.nav-cta{min-height:40px;padding:0 13px;font-size:12px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--purple);padding:12px 16px 18px;flex-direction:column;align-items:stretch;margin:0;border-top:1px solid rgba(255,255,255,.1)}.nav-links.show{display:flex}.nav-links a{padding:12px 14px}.hero-layout,.download-grid,.device-table,.faq-grid{grid-template-columns:1fr}.page-hero{padding:60px 0 45px}.device-scene{min-height:350px}.status-grid{grid-template-columns:1fr 1fr;gap:18px}.status-item{padding:0 12px;border-right:0}.status-item:first-child{padding-left:0}.status-item:nth-child(odd){border-right:1px solid var(--line)}.steps{grid-template-columns:1fr;border-top:0}.step,.step:not(:last-child){margin:0;padding:20px 0 20px 34px;border-right:0;border-bottom:1px solid var(--line)}.step:before{content:"";position:absolute;left:8px;top:47px;width:1px;height:calc(100% - 25px);background:var(--line)}.step:last-child:before{display:none}.step-number{position:absolute;left:0;top:20px}.feature-list{padding:20px}.cta{padding:32px 25px;display:block}.cta-actions{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}}
    @media(max-width:520px){.page-hero h1{font-size:34px}.hero-copy{font-size:15px}.hero-actions .btn{width:100%}.orbit{width:280px;height:280px}.device{transform:rotate(3deg) scale(.88)}.section{padding:58px 0}.section-head{display:block}.section-intro{margin-top:14px}.feature-list{grid-template-columns:1fr}.download-card,.info-card{padding:24px}.download-actions .btn{width:100%}.footer-grid{grid-template-columns:1fr}.brand-text small{font-size:9px}}

/* 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}