/* roulang page: index */
:root{
  --plum:#38243f;--plum-2:#523356;--plum-3:#765579;--orange:#d86f3d;
  --orange-dark:#b9572c;--cream:#fbf8f3;--sand:#f1ebe3;--ink:#29242a;
  --muted:#746d75;--line:#e4dbd5;--white:#fff;--radius:16px;
  --shadow:0 16px 40px rgba(56,36,63,.09);--container:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:var(--cream);line-height:1.7}
a{color:inherit;text-decoration:none;transition:.25s ease}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.site-header{background:var(--plum);color:#fff;position:relative;z-index:10}
.navbar{height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.logo{display:flex;align-items:center;gap:12px;min-width:250px}
.logo-mark{width:38px;height:38px;border:2px solid #e8b08e;border-radius:12px;display:grid;place-items:center;color:#f4b18d;font-weight:800;font-size:19px}
.logo strong{font-size:17px;letter-spacing:.04em;display:block}
.logo small{display:block;color:#d8cbd9;font-size:11px;line-height:1.2;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:5px}
.nav-links a{padding:10px 13px;border-radius:8px;color:#e9dfe9;font-size:14px;white-space:nowrap}
.nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.11)}
.nav-links a.active{box-shadow:inset 0 -2px var(--orange)}
.nav-cta{background:var(--orange)!important;color:#fff!important;padding:10px 17px!important}
.nav-cta:hover{background:var(--orange-dark)!important;transform:translateY(-1px)}
.menu-toggle{display:none;background:transparent;color:#fff;border:1px solid rgba(255,255,255,.3);border-radius:8px;padding:7px 10px}
.notice-bar{background:#2c1d32;border-top:1px solid rgba(255,255,255,.08);font-size:12px;color:#d8cbd9}
.notice-inner{height:35px;display:flex;align-items:center;gap:22px}
.notice-label{color:#f1aa83;font-weight:700}
.hero{padding:78px 0 72px;background:linear-gradient(115deg,#fbf8f3 0%,#f7efe8 65%,#eadbd6 100%);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:72px;align-items:center}
.eyebrow,.section-kicker{color:var(--orange-dark);font-size:13px;font-weight:800;letter-spacing:.12em;margin-bottom:14px}
.hero h1{font-size:clamp(38px,5vw,66px);line-height:1.16;letter-spacing:-.045em;color:var(--plum);max-width:680px}
.hero h1 span{color:var(--orange-dark)}
.hero-copy{font-size:17px;color:var(--muted);max-width:590px;margin:24px 0 28px}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:9px;padding:12px 20px;font-weight:700;border:1px solid transparent}
.btn-primary{background:var(--orange);color:#fff}.btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(216,111,61,.2)}
.btn-outline{border-color:var(--plum);color:var(--plum)}.btn-outline:hover{background:var(--plum);color:#fff}
.hero-note{font-size:12px;color:#81767d;margin-top:18px}
.hero-panel{background:var(--plum);border-radius:24px;padding:26px;color:#fff;box-shadow:var(--shadow);position:relative}
.panel-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(255,255,255,.15);padding-bottom:18px}
.panel-title{font-size:18px;font-weight:700}.status{font-size:12px;color:#f4b18d}
.panel-body{padding:28px 0 8px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.panel-card{border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:17px;background:rgba(255,255,255,.06)}
.panel-card b{font-size:24px;color:#f3b18f;display:block}.panel-card span{font-size:12px;color:#cdbdce}
.panel-list{margin-top:16px;display:grid;gap:11px}.panel-list div{display:flex;justify-content:space-between;color:#d8cbd9;font-size:13px}.panel-list i{color:#f0ad88;font-style:normal}
.section{padding:82px 0}.section.alt{background:var(--sand)}.section.dark{background:var(--plum);color:#fff}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
h2{font-size:clamp(27px,3vw,40px);line-height:1.25;color:var(--plum);letter-spacing:-.03em}.dark h2{color:#fff}
.section-intro{color:var(--muted);max-width:610px}.dark .section-intro{color:#d7cad8}
.status-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 8px 24px rgba(56,36,63,.04)}
.status-item{padding:21px 23px;border-right:1px solid var(--line)}.status-item:last-child{border:0}
.status-item small{color:var(--muted);display:block;font-size:12px}.status-item strong{color:var(--plum);font-size:15px}.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#6c9b71;margin-right:7px}
.news-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:22px}.feature-news,.news-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.feature-news{padding:30px;min-height:300px;display:flex;flex-direction:column;justify-content:space-between}.feature-news h3{font-size:27px;line-height:1.35;color:var(--plum);margin:14px 0}.feature-news p{color:var(--muted)}
.news-list{padding:8px 24px}.news-item{display:block;padding:20px 0;border-bottom:1px solid var(--line)}.news-item:last-child{border:0}
.news-meta{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:12px}.tag{display:inline-block;background:#f4e5dd;color:var(--orange-dark);border-radius:20px;padding:2px 9px;font-size:11px;font-weight:700}
.news-item h4{color:var(--plum);font-size:16px;margin:5px 0}.news-item p{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.empty-state{padding:30px;text-align:center;color:var(--muted);background:#fff;border:1px dashed var(--line);border-radius:12px}
.app-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;align-items:center}
.device-scene{min-height:340px;background:#eadbd6;border-radius:24px;position:relative;display:grid;place-items:center}
.device{width:190px;height:330px;background:#27202b;border:7px solid #fff;border-radius:28px;box-shadow:18px 20px 35px rgba(56,36,63,.18);padding:18px 12px}
.device-screen{height:100%;border-radius:17px;background:#f8f1eb;padding:16px;color:var(--plum)}.device-screen strong{font-size:14px}.screen-line{height:8px;background:#d8c5c6;border-radius:5px;margin:16px 0 10px}.screen-box{height:65px;background:#fff;border-radius:10px;border-left:4px solid var(--orange);margin-top:14px}
.app-info h2{margin-bottom:17px}.app-info p{color:var(--muted);margin-bottom:22px}.app-points{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0}.app-points div{padding:14px;background:#fff;border:1px solid var(--line);border-radius:10px}.app-points b{display:block;color:var(--plum);font-size:14px}.app-points span{color:var(--muted);font-size:12px}
.service-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}.service-menu{background:#fff;border-radius:var(--radius);border:1px solid var(--line);padding:10px 26px}.service-row{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 0;border-bottom:1px solid var(--line)}.service-row:last-child{border:0}.service-row b{color:var(--plum);display:block}.service-row span{font-size:13px;color:var(--muted)}.arrow{font-size:22px;color:var(--orange)}
.service-note{padding:30px;background:var(--plum);color:#fff;border-radius:var(--radius)}.service-note h3{font-size:24px;margin-bottom:12px}.service-note p{color:#d7cad8;font-size:14px}.service-note ul{list-style:none;margin-top:20px}.service-note li{padding:9px 0;border-bottom:1px solid rgba(255,255,255,.14);font-size:13px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.step{position:relative;padding:12px 28px 12px 0}.step:not(:last-child):after{content:"";position:absolute;top:29px;right:18px;width:calc(100% - 70px);height:1px;background:#d2c3c0}.step-num{width:42px;height:42px;border-radius:50%;background:var(--plum);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:17px;position:relative;z-index:1}.step h3{font-size:17px;color:var(--plum)}.step p{font-size:13px;color:var(--muted);margin-top:5px}
.security-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:start}.security-score{background:#fff;border-radius:var(--radius);padding:28px;border:1px solid var(--line)}.score-label{color:var(--muted);font-size:13px}.score{font-size:44px;font-weight:800;color:var(--plum);line-height:1.2}.score em{font-size:14px;color:#6c9b71;font-style:normal}.check-list{display:grid;gap:12px}.check{display:flex;gap:13px;padding:15px 18px;background:#fff;border:1px solid var(--line);border-radius:10px}.check-icon{color:#6c9b71;font-weight:800}.check b{display:block;color:var(--plum);font-size:15px}.check span{color:var(--muted);font-size:13px}
.responsibility{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}.responsibility p{color:var(--muted);margin-top:14px}.notice-box{border-left:4px solid var(--orange);background:#fff;padding:23px 26px;border-radius:0 12px 12px 0}.notice-box strong{color:var(--plum)}.notice-box li{list-style:none;padding:7px 0;font-size:14px;color:var(--muted)}
.feature-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.feature-tile{padding:24px 20px;border-top:3px solid var(--orange);background:#fff;border-radius:12px;box-shadow:0 7px 20px rgba(56,36,63,.05)}.feature-tile b{display:block;color:var(--plum);font-size:16px;margin-bottom:7px}.feature-tile span{font-size:13px;color:var(--muted)}
.timeline{border-left:2px solid #d9c5c4;margin-left:12px;padding-left:28px;display:grid;gap:25px}.timeline-item{position:relative}.timeline-item:before{content:"";position:absolute;left:-36px;top:7px;width:12px;height:12px;background:var(--orange);border:3px solid var(--sand);border-radius:50%}.timeline-meta{color:var(--orange-dark);font-size:12px;font-weight:700}.timeline h3{font-size:17px;color:var(--plum)}.timeline p{font-size:13px;color:var(--muted)}
.scene-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.scene{padding:24px 16px;background:var(--sand);border-radius:12px;border:1px solid var(--line)}.scene b{font-size:30px;color:#d3aaa0;display:block}.scene strong{color:var(--plum);display:block;margin:5px 0}.scene span{font-size:12px;color:var(--muted)}
.faq{max-width:850px;margin:auto}.faq-item{border-bottom:1px solid var(--line);background:#fff;padding:0 22px}.faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;padding:21px 0;border:0;background:none;color:var(--plum);font-weight:700;text-align:left}.faq-question span{font-size:23px;color:var(--orange);transition:.25s}.faq-answer{display:none;padding:0 35px 20px 0;color:var(--muted);font-size:14px}.faq-item.open .faq-answer{display:block}.faq-item.open .faq-question span{transform:rotate(45deg)}
.contact-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:45px}.contact-copy p{color:#d7cad8;margin:15px 0}.contact-list{list-style:none;color:#fff}.contact-list li{padding:9px 0;color:#e5d9e5;font-size:14px}.form-box{background:#fff;border-radius:var(--radius);padding:28px;color:var(--ink)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.field.full{grid-column:1/-1}.field label{display:block;font-size:13px;font-weight:700;color:var(--plum);margin-bottom:6px}.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:11px 13px;outline:0;background:#fff}.field textarea{min-height:105px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--plum);box-shadow:0 0 0 3px rgba(56,36,63,.1)}.form-tip{font-size:12px;color:var(--muted);margin:12px 0}
.matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.matrix a{background:#fff;border:1px solid var(--line);padding:20px;border-radius:12px;color:var(--plum);font-weight:700}.matrix a:hover{border-color:var(--orange);transform:translateY(-2px)}.matrix small{display:block;color:var(--muted);font-weight:400;margin-top:4px}
.footer{background:#251a29;color:#d6c9d7;padding:52px 0 24px}.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.12)}.footer h3{color:#fff;font-size:16px;margin-bottom:14px}.footer p,.footer a{font-size:13px;color:#bcaabd}.footer a{display:block;margin:7px 0}.footer a:hover{color:#f2ad88}.footer-brand strong{display:block;color:#fff;font-size:18px;margin-bottom:8px}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;font-size:12px;color:#9e8d9f}
@media(max-width:1100px){.nav-links{gap:0}.nav-links a{padding:9px 8px}.hero-grid{gap:35px}.scene-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:820px){.container{width:min(100% - 36px,var(--container))}.navbar{height:70px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:var(--plum);padding:12px 18px 18px;flex-direction:column;align-items:stretch;border-top:1px solid rgba(255,255,255,.12)}.nav-links.show{display:flex}.nav-links a{padding:12px}.hero-grid,.news-layout,.app-layout,.service-grid,.security-grid,.contact-layout{grid-template-columns:1fr}.hero{padding:55px 0}.hero-panel{max-width:550px}.status-grid{grid-template-columns:1fr 1fr}.status-item:nth-child(2){border-right:0}.status-item{border-bottom:1px solid var(--line)}.feature-row{grid-template-columns:1fr 1fr}.steps{grid-template-columns:1fr 1fr;gap:22px}.step:not(:last-child):after{display:none}.footer-top{grid-template-columns:1fr 1fr}.matrix{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.logo{min-width:0}.logo small{display:none}.logo strong{font-size:15px}.hero h1{font-size:39px}.hero-copy{font-size:15px}.section{padding:58px 0}.section-head{display:block}.section-head .btn{margin-top:16px}.status-grid,.feature-row,.steps,.scene-grid,.matrix,.form-grid{grid-template-columns:1fr}.status-item{border-right:0!important}.panel-body{grid-template-columns:1fr 1fr}.device-scene{min-height:300px}.device{transform:scale(.85)}.footer-top{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}.actions .btn{width:100%}}

/* roulang page: article */
:root{
      --plum:#38243f;--plum-2:#523356;--plum-3:#765579;--orange:#d86f3d;
      --orange-dark:#b9572c;--cream:#fbf8f3;--sand:#f1ebe3;--ink:#29242a;
      --muted:#746d75;--line:#e4dbd5;--white:#fff;--radius:16px;
      --shadow:0 16px 40px rgba(56,36,63,.09);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:var(--cream);line-height:1.7}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    a:hover{color:var(--orange-dark)}
    img{display:block;max-width:100%;height:auto}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{background:var(--plum);color:#fff;position:relative;z-index:10}
    .navbar{height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:12px;min-width:250px}
    .logo-mark{width:38px;height:38px;border:2px solid #e8b08e;border-radius:12px;display:grid;place-items:center;color:#f4b18d;font-weight:800;font-size:19px}
    .logo strong{font-size:17px;letter-spacing:.04em;display:block}
    .logo small{display:block;color:#d8cbd9;font-size:11px;line-height:1.2;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:5px}
    .nav-links a{padding:10px 13px;border-radius:8px;color:#e9dfe9;font-size:14px;white-space:nowrap}
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.11)}
    .nav-links a.active{box-shadow:inset 0 -2px var(--orange)}
    .nav-cta{background:var(--orange)!important;color:#fff!important;padding:10px 17px!important}
    .nav-cta:hover{background:var(--orange-dark)!important;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:#fff;border:1px solid rgba(255,255,255,.3);border-radius:8px;padding:7px 10px}
    .notice-bar{background:#2d1d33;color:#d9cbd9;font-size:12px}
    .notice-inner{min-height:34px;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .notice-label{color:#f1b18e;font-weight:700}
    .article-hero{padding:48px 0 42px;background:linear-gradient(115deg,#fbf8f3 0%,#f7efe8 68%,#eadbd6 100%);border-bottom:1px solid var(--line)}
    .breadcrumb{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px;margin-bottom:25px;flex-wrap:wrap}
    .breadcrumb a{color:var(--plum-3)}
    .breadcrumb .current{color:var(--ink);font-weight:600}
    .article-heading{max-width:900px}
    .eyebrow,.section-kicker{color:var(--orange-dark);font-size:13px;font-weight:800;letter-spacing:.12em;margin-bottom:12px}
    .article-heading h1{font-size:clamp(32px,4.4vw,58px);line-height:1.22;letter-spacing:-.035em;color:var(--plum);margin:0 0 22px}
    .article-meta{display:flex;gap:12px;align-items:center;flex-wrap:wrap;color:var(--muted);font-size:13px}
    .tag{display:inline-block;background:#f4e5dd;color:var(--orange-dark);border-radius:20px;padding:3px 10px;font-size:11px;font-weight:700}
    .main-content{padding:58px 0 86px}
    .article-layout{display:grid;grid-template-columns:minmax(0,820px) 290px;gap:58px;align-items:start}
    .article-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(26px,4vw,52px);box-shadow:0 10px 28px rgba(56,36,63,.04)}
    .article-summary{border-left:4px solid var(--orange);background:#fbf2ec;padding:18px 20px;margin:0 0 34px;color:#5d5059;font-size:15px}
    .article-body{font-size:16px;line-height:1.9;color:#403941;overflow-wrap:anywhere}
    .article-body h2{font-size:28px;line-height:1.35;color:var(--plum);margin:42px 0 16px;padding-bottom:10px;border-bottom:1px solid var(--line)}
    .article-body h3{font-size:21px;color:var(--plum-2);margin:30px 0 10px}
    .article-body p{margin:0 0 20px}
    .article-body ul,.article-body ol{padding-left:25px;margin:12px 0 24px}
    .article-body li{margin:7px 0}
    .article-body blockquote{margin:28px 0;padding:18px 22px;background:var(--sand);border-radius:10px;color:var(--plum-2)}
    .article-body table{width:100%;border-collapse:collapse;margin:26px 0;display:block;overflow-x:auto}
    .article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;white-space:nowrap}
    .article-body th{background:var(--sand);color:var(--plum)}
    .article-body img{border-radius:12px;margin:25px auto}
    .article-body a{color:var(--orange-dark);text-decoration:underline;text-underline-offset:3px}
    .side-stack{display:grid;gap:18px;position:sticky;top:20px}
    .side-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}
    .side-card h2{font-size:17px;color:var(--plum);margin:0 0 15px}
    .side-card p{font-size:13px;color:var(--muted);margin:0}
    .toc-list{display:grid;gap:11px;color:var(--muted);font-size:13px}
    .toc-list a{padding-left:12px;border-left:2px solid var(--line)}
    .toc-list a:hover{border-color:var(--orange);color:var(--plum)}
    .help-mark{display:flex;align-items:center;gap:10px;color:var(--plum);font-weight:700}
    .help-icon{width:32px;height:32px;border-radius:10px;background:#f4e5dd;color:var(--orange-dark);display:grid;place-items:center;font-weight:800}
    .article-foot{margin-top:28px;padding-top:22px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:9px;padding:11px 18px;font-weight:700;border:1px solid transparent}
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(216,111,61,.2)}
    .btn-outline{border-color:var(--plum);color:var(--plum)}
    .btn-outline:hover{background:var(--plum);color:#fff}
    .related-section{padding:70px 0;background:var(--sand)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:25px}
    .section-head h2{color:var(--plum);font-size:30px;margin:0}
    .section-intro{color:var(--muted);max-width:600px;margin:0}
    .related-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .related-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;min-height:155px;display:flex;flex-direction:column;justify-content:space-between}
    .related-item:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .related-item h3{font-size:17px;line-height:1.45;color:var(--plum);margin:10px 0}
    .related-item p{font-size:13px;color:var(--muted);margin:0}
    .feedback-section{padding:68px 0}
    .feedback-box{background:var(--plum);border-radius:20px;padding:34px 38px;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:30px}
    .feedback-box h2{margin:0 0 7px;font-size:26px}
    .feedback-box p{margin:0;color:#d8cbd9;font-size:14px}
    .feedback-actions{display:flex;gap:10px;flex-shrink:0}
    .feedback-actions .btn-outline{border-color:#d8cbd9;color:#fff}
    .feedback-actions .btn-outline:hover{background:#fff;color:var(--plum)}
    .footer{background:#291b2e;color:#d9cbd9}
    .footer-top{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px;padding:52px 0 42px}
    .footer-brand strong{color:#fff;font-size:18px}
    .footer-brand p{font-size:13px;max-width:270px;color:#bcaebe;margin-top:12px}
    .footer h3{font-size:14px;color:#fff;margin:0 0 13px}
    .footer-top a{display:block;color:#bcaebe;font-size:13px;margin:7px 0}
    .footer-top a:hover{color:#f1ae89}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0 22px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12px;color:#a997aa}
    .empty-state{padding:35px 10px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:12px}
    :focus-visible{outline:3px solid rgba(216,111,61,.45);outline-offset:3px}
    @media(max-width:1100px){
      .nav-links{gap:0}.nav-links a{padding:9px 8px;font-size:13px}.logo{min-width:220px}
      .article-layout{grid-template-columns:minmax(0,1fr) 255px;gap:28px}
    }
    @media(max-width:850px){
      .navbar{height:70px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;left:24px;right:24px;top:70px;padding:10px;background:var(--plum-2);border-radius:0 0 12px 12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}.nav-links a{padding:12px 14px}.nav-cta{text-align:center;margin-top:5px}
      .article-layout{display:block}.side-stack{position:static;margin-top:24px;grid-template-columns:repeat(2,1fr)}
      .related-list{grid-template-columns:1fr 1fr}.feedback-box{display:block}.feedback-actions{margin-top:22px}
    }
    @media(max-width:576px){
      .container{width:min(100% - 36px,var(--container))}
      .notice-inner{padding:7px 0;display:block}.notice-inner span{display:block}
      .article-hero{padding:32px 0}.article-heading h1{font-size:34px}
      .main-content{padding:35px 0 55px}.article-card{padding:23px 18px}.article-body{font-size:15px}
      .article-body h2{font-size:24px}.side-stack,.related-list{grid-template-columns:1fr}
      .section-head{display:block}.section-head h2{font-size:26px;margin-bottom:8px}
      .feedback-box{padding:26px 22px}.feedback-actions{display:grid;grid-template-columns:1fr}
      .footer-top{grid-template-columns:1fr 1fr;gap:25px;padding:38px 0}
      .footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin:5px 0}
    }

/* roulang page: category1 */
:root{
      --plum:#38243f;--plum-2:#523356;--plum-3:#765579;--orange:#d86f3d;
      --orange-dark:#b9572c;--cream:#fbf8f3;--sand:#f1ebe3;--ink:#29242a;
      --muted:#746d75;--line:#e4dbd5;--white:#fff;--radius:16px;
      --shadow:0 16px 40px rgba(56,36,63,.09);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:var(--cream);line-height:1.7}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .site-header{background:var(--plum);color:#fff;position:relative;z-index:10}
    .navbar{height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:12px;min-width:250px}
    .logo-mark{width:38px;height:38px;border:2px solid #e8b08e;border-radius:12px;display:grid;place-items:center;color:#f4b18d;font-weight:800;font-size:19px}
    .logo strong{font-size:17px;letter-spacing:.04em;display:block}
    .logo small{display:block;color:#d8cbd9;font-size:11px;line-height:1.2;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:5px}
    .nav-links a{padding:10px 13px;border-radius:8px;color:#e9dfe9;font-size:14px;white-space:nowrap}
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.11)}
    .nav-links a.active{box-shadow:inset 0 -2px var(--orange)}
    .nav-cta{background:var(--orange)!important;color:#fff!important;padding:10px 17px!important}
    .nav-cta:hover{background:var(--orange-dark)!important;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:#fff;border:1px solid rgba(255,255,255,.3);border-radius:8px;padding:7px 10px}
    .notice-bar{background:#2d1c34;color:#decfdf;font-size:13px;padding:9px 0}
    .notice-inner{display:flex;justify-content:space-between;gap:20px;align-items:center}
    .notice-label{color:#f2ad88;font-weight:700;margin-right:10px}
    .page-intro{padding:72px 0 64px;background:linear-gradient(115deg,#fbf8f3,#f5eae3)}
    .eyebrow,.section-kicker{color:var(--orange-dark);font-size:13px;font-weight:800;letter-spacing:.12em;margin-bottom:14px}
    h1,h2,h3,h4{color:var(--plum);line-height:1.3}
    h1{font-size:clamp(34px,5vw,58px);letter-spacing:-.04em;margin:0 0 20px;max-width:780px}
    h1 span{color:var(--orange-dark)}
    .intro-copy{font-size:17px;color:var(--muted);max-width:720px;margin:0}
    .intro-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
    .tag{display:inline-block;background:#f4e5dd;color:var(--orange-dark);border-radius:20px;padding:4px 11px;font-size:12px;font-weight:700}
    .section{padding:78px 0}
    .section.alt{background:var(--sand)}
    .section.dark{background:var(--plum);color:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
    .section h2{font-size:32px;margin:0}
    .section-intro{color:var(--muted);max-width:620px;margin:0}
    .dark h2{color:#fff}.dark .section-intro{color:#d7cad8}
    .filter-bar{display:flex;flex-wrap:wrap;gap:10px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:13px;box-shadow:0 8px 24px rgba(56,36,63,.04)}
    .filter-bar a{padding:10px 19px;border-radius:8px;color:var(--muted);font-size:14px}
    .filter-bar a:hover,.filter-bar a.current{background:var(--plum);color:#fff}
    .news-layout{display:grid;grid-template-columns:1.12fr .88fr;gap:22px}
    .lead-card,.news-list,.info-card,.security-panel,.contact-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 24px rgba(56,36,63,.04)}
    .lead-card{padding:34px;min-height:330px;display:flex;flex-direction:column;justify-content:space-between;border-top:4px solid var(--orange)}
    .lead-card h3{font-size:28px;margin:14px 0}
    .lead-card p,.news-item p,.info-card p{color:var(--muted);margin:0}
    .lead-footer{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-top:24px;font-size:13px;color:var(--muted)}
    .news-list{padding:8px 25px}
    .news-item{display:block;padding:19px 0;border-bottom:1px solid var(--line)}
    .news-item:last-child{border-bottom:0}
    .news-meta{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:12px}
    .news-item h4{font-size:17px;margin:6px 0 4px}
    .news-item:hover h4,.lead-card:hover h3{color:var(--orange-dark)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:9px;padding:12px 20px;font-weight:700;border:1px solid transparent}
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(216,111,61,.2)}
    .btn-outline{border-color:var(--plum);color:var(--plum)}
    .btn-outline:hover{background:var(--plum);color:#fff}
    .insight-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .info-card{padding:26px 24px;border-top:3px solid var(--orange)}
    .info-card h3{font-size:20px;margin:0 0 11px}
    .info-card .num{font-size:34px;color:#d9b3a1;font-weight:800;line-height:1;margin-bottom:20px}
    .timeline{max-width:850px;margin:0 auto;border-left:2px solid #c7a4b0;padding-left:35px;display:grid;gap:30px}
    .timeline-item{position:relative}
    .timeline-item:before{content:"";position:absolute;left:-43px;top:7px;width:13px;height:13px;background:var(--orange);border:3px solid var(--sand);border-radius:50%}
    .timeline-meta{color:var(--orange-dark);font-size:12px;font-weight:700}
    .timeline h3{font-size:20px;margin:5px 0}
    .timeline p{color:var(--muted);margin:0}
    .security-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:40px;align-items:start}
    .security-panel{padding:28px}
    .security-panel h3{margin-top:0}
    .check-list{display:grid;gap:13px;margin:20px 0 0;padding:0;list-style:none}
    .check-list li{padding:14px 16px;border-left:3px solid var(--orange);background:#fbf8f3;color:var(--muted)}
    .check-list strong{color:var(--plum);display:block}
    .faq{max-width:850px;margin:auto}
    .faq-item{border-bottom:1px solid var(--line);background:#fff;padding:0 22px}
    .faq-item:first-child{border-radius:12px 12px 0 0}
    .faq-item:last-child{border-radius:0 0 12px 12px}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;padding:21px 0;border:0;background:none;color:var(--plum);font-weight:700;text-align:left}
    .faq-question span:last-child{color:var(--orange);font-size:22px}
    .faq-answer{display:none;color:var(--muted);font-size:14px;padding:0 0 20px}
    .faq-item.open{border-left:3px solid var(--orange)}
    .faq-item.open .faq-answer{display:block}
    .contact-box{padding:34px;display:flex;justify-content:space-between;align-items:center;gap:30px}
    .contact-box h2{margin:0 0 8px}
    .contact-box p{color:var(--muted);margin:0}
    .footer{background:#281a2e;color:#d9ccd9;padding-top:52px}
    .footer-top{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px;padding-bottom:42px}
    .footer-brand strong{font-size:19px;color:#fff}
    .footer-brand p{font-size:13px;max-width:300px;color:#bbaabd;margin-top:12px}
    .footer h3{color:#fff;font-size:14px;margin:0 0 15px}
    .footer a{display:block;color:#bbaabd;font-size:13px;margin:9px 0}
    .footer a:hover{color:#f0a47e}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0 22px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12px;color:#a997aa}
    .accessibility{outline:none}
    a:focus-visible,button:focus-visible{outline:3px solid #f0ab87;outline-offset:3px}
    @media(max-width:992px){
      .nav-links{gap:0}.nav-links a{padding:9px 8px;font-size:13px}
      .logo{min-width:215px}.news-layout,.security-grid{grid-template-columns:1fr}
      .footer-top{grid-template-columns:1.5fr repeat(3,1fr);gap:20px}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 36px))}
      .navbar{height:70px}.menu-toggle{display:block}
      .nav-links{display:none;position:absolute;top:70px;left:0;right:0;padding:12px 18px 18px;background:var(--plum);flex-direction:column;align-items:stretch;box-shadow:0 12px 20px rgba(0,0,0,.18)}
      .nav-links.show{display:flex}.nav-links a{padding:12px 13px}
      .notice-inner{align-items:flex-start;flex-direction:column;gap:2px}
      .page-intro{padding:56px 0 48px}
      .section{padding:58px 0}.section-head{display:block}.section-head .section-intro{margin-top:12px}
      .insight-grid{grid-template-columns:1fr}
      .contact-box{display:block}.contact-box .btn{margin-top:22px}
      .footer-top{grid-template-columns:1fr 1fr}
    }
    @media(max-width:520px){
      h1{font-size:36px}.section h2{font-size:27px}
      .lead-card{padding:25px}.news-list{padding:5px 18px}
      .filter-bar a{padding:8px 12px;font-size:13px}
      .footer-top{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
    }

/* roulang page: category2 */
:root{
      --plum:#38243f;
      --plum-2:#523356;
      --plum-3:#765579;
      --orange:#d86f3d;
      --orange-dark:#b9572c;
      --cream:#fbf8f3;
      --sand:#f1ebe3;
      --ink:#29242a;
      --muted:#746d75;
      --line:#e4dbd5;
      --white:#fff;
      --radius:16px;
      --shadow:0 16px 40px rgba(56,36,63,.09);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:var(--cream);
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;
      line-height:1.7;
    }
    a{color:inherit;text-decoration:none;transition:.25s ease}
    a:hover{color:var(--orange-dark)}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .site-header{background:var(--plum);color:#fff;position:relative;z-index:10}
    .navbar{height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:12px;min-width:250px}
    .logo-mark{width:38px;height:38px;border:2px solid #e8b08e;border-radius:12px;display:grid;place-items:center;color:#f4b18d;font-weight:800;font-size:19px}
    .logo strong{font-size:17px;letter-spacing:.04em;display:block}
    .logo small{display:block;color:#d8cbd9;font-size:11px;line-height:1.2;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:5px}
    .nav-links a{padding:10px 13px;border-radius:8px;color:#e9dfe9;font-size:14px;white-space:nowrap}
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.11)}
    .nav-links a.active{box-shadow:inset 0 -2px var(--orange)}
    .nav-cta{background:var(--orange)!important;color:#fff!important;padding:10px 17px!important}
    .nav-cta:hover{background:var(--orange-dark)!important;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:#fff;border:1px solid rgba(255,255,255,.3);border-radius:8px;padding:7px 10px}
    .notice-bar{background:#2f1d35;color:#daceda;font-size:12px;padding:8px 0}
    .notice-inner{display:flex;justify-content:space-between;gap:20px}
    .notice-inner strong{color:#f0ad88;font-weight:700}
    .page-intro{padding:64px 0 52px;background:linear-gradient(120deg,#fbf8f3,#f3e8e0)}
    .intro-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:55px;align-items:end}
    .eyebrow,.section-kicker{color:var(--orange-dark);font-size:13px;font-weight:800;letter-spacing:.12em;margin-bottom:13px}
    h1,h2,h3,h4,p{margin-top:0}
    h1{font-size:clamp(34px,5vw,58px);line-height:1.2;letter-spacing:-.04em;color:var(--plum);margin-bottom:18px}
    h2{font-size:clamp(26px,3vw,38px);line-height:1.3;color:var(--plum);margin-bottom:12px}
    h3{color:var(--plum);font-size:20px}
    .intro-copy{font-size:17px;color:var(--muted);max-width:720px;margin-bottom:0}
    .intro-side{border-left:3px solid var(--orange);padding:5px 0 5px 24px}
    .intro-side strong{font-size:19px;color:var(--plum);display:block;margin-bottom:6px}
    .intro-side span{color:var(--muted);font-size:14px}
    .section{padding:76px 0}
    .section.alt{background:var(--sand)}
    .section.dark{background:var(--plum);color:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
    .section-intro{color:var(--muted);max-width:650px}
    .dark .section-intro{color:#d7cad8}
    .download-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:30px;align-items:stretch}
    .device-showcase{background:var(--plum);border-radius:22px;min-height:400px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
    .device-showcase:before,.device-showcase:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.14);border-radius:50%}
    .device-showcase:before{width:330px;height:330px}
    .device-showcase:after{width:240px;height:240px}
    .phone{width:190px;height:350px;border:7px solid #cbb8c9;border-radius:28px;background:#faf3ec;position:relative;z-index:1;padding:34px 15px 15px;box-shadow:0 18px 34px rgba(0,0,0,.25)}
    .phone-notch{position:absolute;top:9px;left:50%;transform:translateX(-50%);width:58px;height:6px;border-radius:6px;background:#624667}
    .phone-logo{width:42px;height:42px;border-radius:13px;background:var(--plum);color:#f2ab83;display:grid;place-items:center;font-weight:800;margin:0 auto 16px}
    .phone-line{height:10px;background:#dfcfc7;border-radius:6px;margin:10px 0}
    .phone-line.short{width:58%}
    .phone-box{height:78px;border-radius:12px;background:#ead6cc;margin-top:18px;padding:13px}
    .phone-box i{display:block;width:45%;height:8px;background:#c88468;border-radius:5px;margin-bottom:10px}
    .download-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:36px;box-shadow:var(--shadow)}
    .download-card h3{font-size:28px;margin-bottom:12px}
    .download-card p{color:var(--muted)}
    .download-actions{display:flex;gap:12px;flex-wrap:wrap;margin:25px 0}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:9px;padding:12px 20px;font-weight:700;border:1px solid transparent}
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(216,111,61,.2)}
    .btn-outline{border-color:var(--plum);color:var(--plum)}
    .btn-outline:hover{background:var(--plum);color:#fff}
    .version-box{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);padding-top:20px;gap:12px}
    .version-box small{display:block;color:var(--muted);font-size:12px}
    .version-box strong{display:block;color:var(--plum);font-size:15px}
    .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;border-right:1px solid var(--line);margin-right:24px}
    .step:last-child{border:0;margin:0}
    .step-number{font-size:34px;color:var(--orange);font-weight:800;line-height:1;margin-bottom:17px}
    .step p{font-size:14px;color:var(--muted);margin-bottom:0}
    .compat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .compat-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px 20px}
    .compat-card b{display:block;color:var(--plum);font-size:17px;margin-bottom:7px}
    .compat-card span{color:var(--muted);font-size:13px}
    .update-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .update-row{display:grid;grid-template-columns:130px 120px 1fr;gap:20px;align-items:center;padding:20px 25px;border-bottom:1px solid var(--line)}
    .update-row:last-child{border-bottom:0}
    .update-date{color:var(--muted);font-size:13px}
    .update-version{color:var(--orange-dark);font-weight:800;font-size:14px}
    .update-row strong{color:var(--plum);display:block}
    .update-row span{font-size:13px;color:var(--muted)}
    .faq{max-width:880px;margin:auto}
    .faq-item{border-bottom:1px solid var(--line);background:#fff;padding:0 22px}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;padding:21px 0;border:0;background:none;color:var(--plum);font-weight:700;text-align:left}
    .faq-question span:last-child{font-size:22px;color:var(--orange);transition:.25s}
    .faq-answer{display:none;color:var(--muted);font-size:14px;padding:0 35px 21px 0}
    .faq-item.open{border-left:3px solid var(--orange)}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .security-note{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:center}
    .security-copy{color:#d7cad8}
    .security-list{display:grid;gap:11px}
    .security-list div{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.13);border-radius:10px;padding:13px 17px;color:#f2e9f2;font-size:14px}
    .security-list b{color:#f0ad88;margin-right:8px}
    .cta-band{padding:48px 0;background:#eadbd2}
    .cta-content{display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta-content p{color:var(--muted);margin:0}
    .footer{background:#271a2c;color:#d9cbd9;padding-top:55px}
    .footer-top{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:38px;padding-bottom:42px}
    .footer-brand strong{font-size:19px;color:#fff}
    .footer-brand p{color:#bcaebe;font-size:13px;max-width:280px;margin-top:13px}
    .footer h3{color:#fff;font-size:15px;margin-bottom:14px}
    .footer-top a{display:block;color:#bcaebe;font-size:13px;margin:8px 0}
    .footer-top a:hover{color:#f0ad88}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;justify-content:space-between;gap:20px;color:#a998ab;font-size:12px}
    :focus-visible{outline:3px solid rgba(216,111,61,.45);outline-offset:3px}
    @media(max-width:1024px){
      .nav-links a{padding:9px 8px;font-size:13px}
      .intro-layout,.download-layout{gap:30px}
      .container{width:min(var(--container),calc(100% - 36px))}
    }
    @media(max-width:768px){
      .navbar{height:70px}
      .logo{min-width:0}
      .logo strong{font-size:15px}
      .logo small{font-size:10px}
      .menu-toggle{display:block}
      .nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:var(--plum);padding:12px 18px 18px;flex-direction:column;align-items:stretch;box-shadow:0 12px 20px rgba(0,0,0,.18)}
      .nav-links.show{display:flex}
      .nav-links a{padding:12px 14px}
      .notice-inner{display:block}
      .notice-inner span{display:block}
      .page-intro{padding:48px 0 40px}
      .intro-layout,.download-layout,.security-note{grid-template-columns:1fr}
      .section{padding:58px 0}
      .section-head{display:block}
      .section-head .btn{margin-top:18px}
      .steps{grid-template-columns:1fr 1fr;border-top:0;gap:12px}
      .step{border:1px solid var(--line);border-radius:12px;margin:0;padding:20px}
      .compat-grid{grid-template-columns:1fr 1fr}
      .update-row{grid-template-columns:1fr 1fr;gap:7px 15px}
      .update-row div:last-child{grid-column:1/-1}
      .cta-content{display:block}
      .cta-content .btn{margin-top:20px}
      .footer-top{grid-template-columns:1fr 1fr;gap:28px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:6px}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 36px)}
      h1{font-size:35px}
      .download-card{padding:25px}
      .version-box{grid-template-columns:1fr}
      .steps,.compat-grid{grid-template-columns:1fr}
      .device-showcase{min-height:350px}
      .update-row{padding:18px}
      .footer-top{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
    }

/* roulang page: category3 */
:root{
      --plum:#38243f;--plum-2:#523356;--plum-3:#765579;--orange:#d86f3d;
      --orange-dark:#b9572c;--cream:#fbf8f3;--sand:#f1ebe3;--ink:#29242a;
      --muted:#746d75;--line:#e4dbd5;--white:#fff;--radius:16px;
      --shadow:0 16px 40px rgba(56,36,63,.09);--container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:var(--cream);line-height:1.7}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .site-header{background:var(--plum);color:#fff;position:relative;z-index:10}
    .navbar{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:12px;min-width:250px}
    .logo-mark{width:38px;height:38px;border:2px solid #e8b08e;border-radius:12px;display:grid;place-items:center;color:#f4b18d;font-weight:800;font-size:19px}
    .logo strong{font-size:17px;letter-spacing:.04em;display:block}
    .logo small{display:block;color:#d8cbd9;font-size:11px;line-height:1.2;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:5px}
    .nav-links a{padding:10px 13px;border-radius:8px;color:#e9dfe9;font-size:14px;white-space:nowrap}
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.11)}
    .nav-links a.active{box-shadow:inset 0 -2px var(--orange)}
    .nav-cta{background:var(--orange)!important;color:#fff!important;padding:10px 17px!important}
    .nav-cta:hover{background:var(--orange-dark)!important;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:#fff;border:1px solid rgba(255,255,255,.3);border-radius:8px;padding:7px 10px}
    .page-intro{padding:68px 0 58px;background:linear-gradient(115deg,#fbf8f3,#f4e8df)}
    .intro-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end}
    .eyebrow,.section-kicker{color:var(--orange-dark);font-size:13px;font-weight:800;letter-spacing:.12em;margin-bottom:13px}
    h1,h2,h3,h4{color:var(--plum);line-height:1.3}
    h1{font-size:clamp(34px,5vw,60px);letter-spacing:-.04em;margin:0 0 20px}
    h1 span{color:var(--orange-dark)}
    h2{font-size:clamp(26px,3vw,38px);margin:0}
    .intro-copy{font-size:17px;color:var(--muted);max-width:650px;margin:0}
    .intro-note{border-left:3px solid var(--orange);padding:20px 0 20px 24px;color:var(--plum-2);font-size:15px}
    .breadcrumb{font-size:13px;color:var(--muted);margin-bottom:25px}
    .breadcrumb a:hover{color:var(--orange-dark)}
    .section{padding:78px 0}
    .section.alt{background:var(--sand)}
    .section.dark{background:var(--plum);color:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
    .section-intro{color:var(--muted);max-width:620px;margin:8px 0 0}
    .dark h2,.dark h3{color:#fff}
    .dark .section-intro{color:#d7cad8}
    .service-layout{display:grid;grid-template-columns:1.12fr .88fr;gap:24px}
    .service-menu,.help-card,.notice-card,.faq-item,.feedback-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
    .service-menu{padding:8px 28px}
    .service-row{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px 0;border-bottom:1px solid var(--line)}
    .service-row:last-child{border-bottom:0}
    .service-row b{color:var(--plum);display:block;font-size:17px}
    .service-row span{font-size:13px;color:var(--muted)}
    .service-row .arrow{font-size:24px;color:var(--orange)}
    .help-card{padding:30px;box-shadow:var(--shadow);background:var(--plum);color:#fff}
    .help-card h3{color:#fff;margin:0 0 14px}
    .help-card p{color:#ded2df;font-size:14px;margin-bottom:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:9px;padding:12px 20px;font-weight:700;border:1px solid transparent}
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(216,111,61,.2)}
    .btn-outline{border-color:var(--plum);color:var(--plum)}
    .btn-outline:hover{background:var(--plum);color:#fff}
    .help-card .btn-outline{border-color:#e8dce9;color:#fff}
    .help-card .btn-outline:hover{background:#fff;color:var(--plum)}
    .step-line{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
    .step-line:before{content:"";position:absolute;top:19px;left:8%;right:8%;height:1px;background:#d9c8c0}
    .step{position:relative;padding-right:22px}
    .step-number{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:var(--orange);color:#fff;font-weight:800;position:relative;margin-bottom:20px;border:5px solid var(--sand)}
    .step h3{font-size:18px;margin-bottom:8px}
    .step p{font-size:14px;color:var(--muted);margin:0}
    .process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .process-card{padding:27px 24px;border-top:3px solid var(--orange);background:#fff;border-radius:12px;box-shadow:0 7px 20px rgba(56,36,63,.05)}
    .process-card .num{font-size:28px;color:var(--orange);font-weight:800}
    .process-card h3{font-size:18px;margin:8px 0}
    .process-card p{font-size:14px;color:var(--muted);margin:0}
    .notice-layout{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .notice-card{padding:27px}
    .notice-meta{display:flex;justify-content:space-between;color:var(--orange-dark);font-size:12px;font-weight:700;margin-bottom:12px}
    .notice-card h3{font-size:20px;margin:0 0 10px}
    .notice-card p{font-size:14px;color:var(--muted);margin:0}
    .faq{max-width:900px;margin:auto}
    .faq-item{margin-bottom:10px;padding:0 22px;overflow:hidden}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;padding:20px 0;border:0;background:none;color:var(--plum);font-weight:700;text-align:left}
    .faq-question span:last-child{color:var(--orange);font-size:22px}
    .faq-answer{display:none;color:var(--muted);font-size:14px;padding:0 0 20px}
    .faq-item.open{border-left:3px solid var(--orange)}
    .faq-item.open .faq-answer{display:block}
    .feedback-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:32px;align-items:start}
    .contact-copy p{color:var(--muted)}
    .contact-list{display:grid;gap:12px;margin-top:24px}
    .contact-list div{padding:15px 17px;background:var(--sand);border-radius:10px}
    .contact-list b{color:var(--plum);margin-right:10px}
    .feedback-form{padding:28px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}
    .form-field{display:flex;flex-direction:column;gap:7px}
    .form-field.full{grid-column:1/-1}
    label{font-size:13px;font-weight:700;color:var(--plum)}
    input,select,textarea{width:100%;border:1px solid var(--line);border-radius:9px;background:#fff;padding:11px 13px;color:var(--ink);outline:none}
    textarea{min-height:118px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(216,111,61,.12)}
    .form-tip{font-size:12px;color:var(--muted);margin:14px 0 18px}
    .responsibility{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center}
    .responsibility-box{padding:28px;border:1px solid #dfcfc8;border-radius:14px;background:#fff8f3}
    .responsibility-box h3{margin-top:0}
    .responsibility ul{padding-left:20px;margin:0;color:var(--muted);font-size:14px}
    .footer{background:#2c2032;color:#fff;padding-top:52px}
    .footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:35px;padding-bottom:40px}
    .footer-brand strong{font-size:19px}
    .footer-brand p{color:#cbbdcd;font-size:13px;max-width:300px;margin-top:12px}
    .footer h3{color:#f0d7ca;font-size:14px;margin:0 0 14px}
    .footer-top>div:not(:first-child){display:flex;flex-direction:column;gap:8px}
    .footer-top a{color:#cbbdcd;font-size:13px}
    .footer-top a:hover{color:#fff;padding-left:3px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.13);padding:18px 0 22px;display:flex;justify-content:space-between;gap:20px;color:#bcaebe;font-size:12px}
    @media(max-width:992px){
      .nav-links{gap:0}.nav-links a{padding:9px 8px;font-size:13px}
      .logo{min-width:220px}.intro-layout,.service-layout,.feedback-layout{grid-template-columns:1fr;gap:30px}
      .footer-top{grid-template-columns:1.4fr 1fr 1fr}
      .footer-top>div:last-child{grid-column:2}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 36px))}
      .navbar{min-height:70px}.menu-toggle{display:block}
      .nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:var(--plum);padding:12px 18px 18px;flex-direction:column;align-items:stretch;box-shadow:0 12px 20px rgba(0,0,0,.15)}
      .nav-links.show{display:flex}.nav-links a{padding:12px 14px}
      .logo small{display:none}.logo{min-width:0}
      .page-intro{padding:48px 0 44px}.section{padding:58px 0}
      .step-line{grid-template-columns:1fr 1fr;gap:28px 18px}.step-line:before{display:none}
      .process-grid,.notice-layout,.responsibility{grid-template-columns:1fr}
      .section-head{display:block}.section-head .btn{margin-top:18px}
      .footer-top{grid-template-columns:1fr 1fr;gap:27px}.footer-top>div:last-child{grid-column:auto}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}
    }
    @media(max-width:520px){
      h1{font-size:36px}.form-grid{grid-template-columns:1fr}.form-field.full{grid-column:auto}
      .step-line{grid-template-columns:1fr}.service-menu{padding:4px 19px}
      .service-row{padding:18px 0}.help-card,.feedback-form{padding:23px}
      .footer-top{grid-template-columns:1fr}
    }

/* roulang page: category4 */
:root{
      --plum:#38243f;--plum-2:#523356;--plum-3:#765579;--orange:#d86f3d;
      --orange-dark:#b9572c;--cream:#fbf8f3;--sand:#f1ebe3;--ink:#29242a;
      --muted:#746d75;--line:#e4dbd5;--white:#fff;--radius:16px;
      --shadow:0 16px 40px rgba(56,36,63,.09);--container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:var(--cream);line-height:1.7}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .site-header{background:var(--plum);color:#fff;position:relative;z-index:10}
    .navbar{height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:12px;min-width:250px}
    .logo-mark{width:38px;height:38px;border:2px solid #e8b08e;border-radius:12px;display:grid;place-items:center;color:#f4b18d;font-weight:800;font-size:19px}
    .logo strong{font-size:17px;letter-spacing:.04em;display:block}
    .logo small{display:block;color:#d8cbd9;font-size:11px;line-height:1.2;margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:5px}
    .nav-links a{padding:10px 13px;border-radius:8px;color:#e9dfe9;font-size:14px;white-space:nowrap}
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.11)}
    .nav-links a.active{box-shadow:inset 0 -2px var(--orange)}
    .nav-cta{background:var(--orange)!important;color:#fff!important;padding:10px 17px!important}
    .nav-cta:hover{background:var(--orange-dark)!important;transform:translateY(-1px)}
    .menu-toggle{display:none;background:transparent;color:#fff;border:1px solid rgba(255,255,255,.3);border-radius:8px;padding:7px 10px}
    .page-intro{padding:70px 0 62px;background:linear-gradient(120deg,#fbf8f3,#f3e7df)}
    .intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end}
    .eyebrow,.section-kicker{color:var(--orange-dark);font-size:13px;font-weight:800;letter-spacing:.12em;margin-bottom:13px}
    h1,h2,h3,h4{margin-top:0;color:var(--plum);line-height:1.3}
    h1{font-size:clamp(36px,5vw,60px);letter-spacing:-.04em;margin-bottom:20px}
    h1 span{color:var(--orange-dark)}
    .intro-copy{font-size:17px;color:var(--muted);max-width:700px;margin:0}
    .intro-note{border-left:3px solid var(--orange);padding:18px 22px;background:rgba(255,255,255,.66);border-radius:0 12px 12px 0;color:var(--plum-2)}
    .intro-note strong{display:block;margin-bottom:5px}
    .section{padding:78px 0}
    .section.alt{background:var(--sand)}
    .section.dark{background:var(--plum);color:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
    .section-head h2{font-size:32px;margin-bottom:0}
    .section-intro{color:var(--muted);max-width:620px}
    .dark h2,.dark h3{color:#fff}
    .dark .section-intro{color:#d7cad8}
    .safety-check{display:grid;grid-template-columns:.78fr 1.22fr;gap:24px}
    .safe-card,.check-panel,.device-card,.privacy-box,.step-card,.faq-item,.contact-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 25px rgba(56,36,63,.045)}
    .safe-card{padding:30px;background:var(--plum);color:#fff;min-height:270px}
    .shield{width:58px;height:58px;border:1px solid #e7a889;border-radius:17px;display:grid;place-items:center;color:#f2ad88;font-size:27px;margin-bottom:30px}
    .safe-card h3{font-size:24px;margin-bottom:10px}
    .safe-card p{color:#d9cbd9;margin:0}
    .check-panel{padding:27px}
    .check-list{display:grid;grid-template-columns:1fr 1fr;gap:14px 25px;margin:0;padding:0;list-style:none}
    .check-list li{display:flex;gap:12px;align-items:flex-start;border-bottom:1px solid var(--line);padding:0 0 14px;color:var(--muted);font-size:14px}
    .check-list li:before{content:"✓";display:grid;place-items:center;min-width:22px;height:22px;border-radius:50%;background:#f4e5dd;color:var(--orange-dark);font-weight:800}
    .device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .device-card{padding:25px 22px}
    .device-card .number{color:var(--orange);font-size:28px;font-weight:800;line-height:1}
    .device-card h3{font-size:18px;margin:17px 0 8px}
    .device-card p{color:var(--muted);font-size:14px;margin:0}
    .privacy-layout{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .privacy-box{padding:28px}
    .privacy-box h3{font-size:20px;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:17px}
    .privacy-box ul{margin:0;padding-left:20px;color:var(--muted);font-size:14px}
    .privacy-box li{margin:8px 0}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
    .steps:before{content:"";position:absolute;top:25px;left:10%;right:10%;height:1px;background:#b89caf}
    .step-card{position:relative;padding:0 20px 15px;background:transparent;border:0;box-shadow:none;text-align:center}
    .step-dot{width:50px;height:50px;border-radius:50%;display:grid;place-items:center;margin:0 auto 18px;background:var(--orange);color:#fff;font-weight:800;position:relative;z-index:1;border:5px solid var(--plum)}
    .step-card h3{font-size:17px;color:#fff;margin-bottom:7px}
    .step-card p{font-size:13px;color:#d7cad8;margin:0}
    .responsibility{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
    .responsibility-copy{padding:30px;background:#f8eee8;border:1px solid #ead5ca;border-radius:var(--radius)}
    .responsibility-copy h2{font-size:28px}
    .responsibility-copy p{color:var(--muted)}
    .notice-list{display:grid;gap:12px}
    .notice{display:flex;gap:14px;align-items:flex-start;padding:15px 0;border-bottom:1px solid rgba(56,36,63,.12)}
    .notice:last-child{border-bottom:0}
    .notice b{color:var(--plum);display:block}
    .notice span{font-size:13px;color:var(--muted)}
    .timeline{border-left:2px solid #d7c2d3;padding-left:28px;display:grid;gap:23px}
    .timeline-item{position:relative}
    .timeline-item:before{content:"";position:absolute;left:-36px;top:8px;width:12px;height:12px;background:var(--orange);border:3px solid var(--sand);border-radius:50%}
    .timeline-item time{color:var(--orange-dark);font-size:12px;font-weight:800}
    .timeline-item h3{font-size:18px;margin:4px 0}
    .timeline-item p{color:var(--muted);font-size:14px;margin:0}
    .faq{max-width:850px;margin:auto}
    .faq-item{margin-bottom:10px;padding:0 23px}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;padding:20px 0;border:0;background:none;color:var(--plum);font-weight:700;text-align:left}
    .faq-question span:last-child{font-size:22px;color:var(--orange);transition:.25s}
    .faq-answer{display:none;color:var(--muted);font-size:14px;padding:0 0 20px}
    .faq-item.open{border-left:3px solid var(--orange)}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta-band{padding:52px 0;background:#eadbd6}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta-inner h2{margin:0 0 8px;font-size:30px}
    .cta-inner p{margin:0;color:var(--muted)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:9px;padding:12px 20px;font-weight:700;border:1px solid transparent}
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(216,111,61,.2)}
    .btn-outline{border-color:var(--plum);color:var(--plum)}
    .btn-outline:hover{background:var(--plum);color:#fff}
    .footer{background:#24172a;color:#d8cbd9;padding-top:52px}
    .footer-top{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:35px;padding-bottom:42px}
    .footer-brand strong{font-size:19px;color:#fff}
    .footer-brand p{font-size:13px;max-width:270px;margin-top:12px}
    .footer h3{font-size:15px;color:#fff;margin-bottom:15px}
    .footer a{display:block;color:#c8b9ca;font-size:13px;margin:8px 0}
    .footer a:hover{color:#f1a17a}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0 22px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#a999aa}
    @media(max-width:1100px){
      .nav-links a{padding-left:8px;padding-right:8px;font-size:13px}.logo{min-width:220px}
      .intro-grid{gap:35px}.container{width:min(var(--container),calc(100% - 36px))}
    }
    @media(max-width:850px){
      .navbar{height:70px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;left:18px;right:18px;top:70px;padding:12px;background:var(--plum-2);border-radius:0 0 12px 12px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
      .nav-links.show{display:flex}.nav-links a{padding:12px 14px}.logo{min-width:0}.logo strong{font-size:15px}
      .intro-grid,.safety-check,.privacy-layout,.responsibility{grid-template-columns:1fr}.page-intro{padding:54px 0}
      .device-grid{grid-template-columns:1fr 1fr}.steps{grid-template-columns:1fr 1fr;gap:28px}.steps:before{display:none}
      .footer-top{grid-template-columns:1.4fr 1fr 1fr}
    }
    @media(max-width:560px){
      .container{width:calc(100% - 36px)}.logo small{font-size:10px}.logo-mark{width:34px;height:34px}
      h1{font-size:38px}.section{padding:58px 0}.section-head{display:block}.section-head h2{font-size:27px;margin-bottom:12px}
      .check-list,.device-grid,.steps{grid-template-columns:1fr}.cta-inner{display:block}.cta-inner .btn{margin-top:22px;width:100%}
      .footer-top{grid-template-columns:1fr 1fr;gap:25px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
    }