/* roulang page: index */
:root{
  --coral:#ef6b4f;
  --coral-dark:#d9543b;
  --plum:#302039;
  --plum-2:#493052;
  --ink:#29242c;
  --muted:#746d76;
  --cream:#fffaf5;
  --apricot:#fff0e8;
  --lavender:#f3edf5;
  --line:#eadfe0;
  --white:#fff;
  --green:#4e8c70;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --shadow:0 16px 45px rgba(48,32,57,.08);
  --container:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--cream);line-height:1.7;font-size:15px}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,textarea,select{font:inherit}
button{cursor:pointer;border:0}
.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
.site-header{height:78px;background:rgba(255,250,245,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
.logo{display:flex;align-items:center;gap:11px;color:var(--plum);font-weight:800;font-size:20px;white-space:nowrap}
.logo-mark{width:38px;height:38px;border-radius:12px;background:var(--coral);position:relative;overflow:hidden}
.logo-mark:before,.logo-mark:after{content:"";position:absolute;border:3px solid #fff;border-radius:50%}
.logo-mark:before{width:22px;height:22px;left:8px;top:7px}
.logo-mark:after{width:8px;height:8px;background:#fff;border:0;left:15px;top:14px}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:10px 13px;color:var(--muted);border-radius:9px;transition:.2s ease}
.main-nav a:hover,.main-nav a.active{color:var(--plum);background:var(--lavender)}
.header-action,.btn-primary{background:var(--coral);color:#fff;padding:12px 20px;border-radius:10px;font-weight:700;transition:.2s ease;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.header-action:hover,.btn-primary:hover{background:var(--coral-dark);transform:translateY(-2px);box-shadow:0 9px 20px rgba(239,107,79,.22)}
.menu-toggle{display:none;background:transparent;color:var(--plum);font-size:25px;width:44px;height:44px}
.btn-secondary{display:inline-flex;align-items:center;justify-content:center;padding:11px 19px;border:1px solid var(--plum);color:var(--plum);border-radius:10px;font-weight:700;transition:.2s ease}
.btn-secondary:hover{background:var(--plum);color:#fff;transform:translateY(-2px)}
.btn-primary:focus,.btn-secondary:focus,.header-action:focus,.menu-toggle:focus,input:focus,textarea:focus,select:focus,summary:focus{outline:3px solid rgba(239,107,79,.35);outline-offset:3px}
.hero{padding:92px 0 82px;background:var(--cream);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
.eyebrow,.section-kicker{color:var(--coral-dark);font-weight:800;letter-spacing:.08em;font-size:13px}
.hero h1{font-size:clamp(38px,5vw,66px);line-height:1.18;letter-spacing:-.045em;color:var(--plum);margin:18px 0 24px}
.hero h1 em{font-style:normal;color:var(--coral)}
.hero-copy{font-size:18px;color:var(--muted);max-width:600px;line-height:1.9}
.hero-actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}
.hero-art{min-height:400px;position:relative;background:var(--plum);border-radius:34px;padding:26px;box-shadow:var(--shadow);overflow:hidden}
.hero-art:before{content:"";position:absolute;width:280px;height:280px;border-radius:50%;background:rgba(239,107,79,.3);right:-80px;top:-90px}
.hero-art:after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;background:rgba(255,240,232,.12);left:-70px;bottom:-80px}
.art-top{display:flex;justify-content:space-between;color:#fff;position:relative;z-index:1;font-size:13px}
.art-status{color:#b8e4c9}
.art-panel{position:absolute;left:26px;right:26px;bottom:26px;background:#fffaf5;border-radius:22px;padding:26px;z-index:1}
.art-panel h3{color:var(--plum);font-size:23px;margin:12px 0 8px}
.art-panel p{color:var(--muted);font-size:14px}
.art-pills{display:flex;gap:8px;flex-wrap:wrap}
.art-pills span,.tag{font-size:12px;padding:4px 9px;border-radius:20px;background:var(--apricot);color:var(--coral-dark)}
.section{padding:88px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:34px}
.section-head h2{color:var(--plum);font-size:clamp(27px,3vw,40px);line-height:1.25;margin-top:8px}
.section-head p{color:var(--muted);max-width:510px}
.status-strip{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:23px 0}
.status-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.status-item{display:flex;gap:13px;padding:6px 23px;border-right:1px solid var(--line)}
.status-item:first-child{padding-left:0}
.status-item:last-child{border:0}
.status-icon{width:35px;height:35px;border-radius:10px;background:var(--apricot);color:var(--coral-dark);display:grid;place-items:center;font-weight:800}
.status-item strong{display:block;color:var(--plum);font-size:15px}
.status-item span{display:block;color:var(--muted);font-size:12px}
.interactive{background:#fff}
.interactive-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:70px;align-items:center}
.feature-note{font-size:19px;color:var(--plum);line-height:1.8;margin:20px 0 27px}
.scene-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.scene{border:1px solid var(--line);border-radius:var(--radius-md);padding:21px;background:var(--cream);transition:.2s}
.scene:hover{border-color:var(--coral);box-shadow:var(--shadow);transform:translateY(-3px)}
.scene b{display:block;color:var(--plum);font-size:17px;margin:8px 0 4px}
.scene p{color:var(--muted);font-size:13px}
.scene-num{color:var(--coral);font-size:12px;font-weight:800}
.experience{background:var(--apricot)}
.experience-layout{display:grid;grid-template-columns:180px 1fr;gap:42px}
.big-number{font-size:100px;line-height:1;color:var(--coral);font-weight:900;letter-spacing:-.08em}
.experience-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px}
.experience-row{border-top:1px solid rgba(48,32,57,.16);padding:19px 0;display:flex;gap:18px}
.experience-row b{min-width:106px;color:var(--plum)}
.experience-row span{color:var(--muted)}
.activity-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:18px}
.activity-main,.activity-small{border-radius:var(--radius-lg);padding:30px;position:relative;overflow:hidden}
.activity-main{min-height:255px;background:var(--plum);color:#fff}
.activity-main:after{content:"";position:absolute;width:230px;height:230px;border:1px solid rgba(255,255,255,.22);border-radius:50%;right:-45px;bottom:-90px}
.activity-main h3{font-size:28px;margin:18px 0 8px;position:relative;z-index:1}
.activity-main p{color:#dfd2e1;max-width:500px;position:relative;z-index:1}
.activity-small{background:#fff;border:1px solid var(--line);min-height:119px}
.activity-small h3{font-size:18px;color:var(--plum);margin:8px 0 4px}
.activity-small p{font-size:13px;color:var(--muted)}
.activity-small + .activity-small{margin-top:18px}
.activity-meta{font-size:12px;color:var(--coral)}
.news{background:#fff}
.news-layout{display:grid;grid-template-columns:.32fr .68fr;gap:65px}
.news-intro p{color:var(--muted);margin:18px 0 24px}
.news-list{border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:90px 1fr auto;gap:22px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line);transition:.2s}
.news-item:hover{padding-left:8px}
.news-date{color:var(--coral-dark);font-size:13px;font-weight:700}
.news-item h3{font-size:18px;color:var(--plum);margin-bottom:4px}
.news-item p{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-arrow{color:var(--coral);font-size:21px}
.empty-news{padding:32px 0;color:var(--muted);font-size:14px}
.channels{background:var(--lavender)}
.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.channel{background:#fff;border:1px solid transparent;border-radius:var(--radius-md);padding:23px;transition:.2s}
.channel:hover{border-color:var(--coral);transform:translateY(-3px);box-shadow:var(--shadow)}
.channel b{display:block;color:var(--plum);font-size:17px;margin:12px 0 5px}
.channel span{font-size:13px;color:var(--muted)}
.channel .channel-icon{color:var(--coral);font-size:22px}
.app-section{padding:88px 0}
.app-card{background:var(--plum);border-radius:30px;color:#fff;padding:48px 55px;display:grid;grid-template-columns:1fr .9fr;gap:50px;align-items:center;overflow:hidden}
.app-card h2{font-size:38px;line-height:1.3;margin:12px 0 14px}
.app-card p{color:#ded2e0;max-width:500px}
.app-info{display:flex;align-items:center;gap:18px;margin:26px 0}
.qr{width:92px;height:92px;background:repeating-linear-gradient(45deg,#fff 0 4px,#302039 4px 8px);border:7px solid #fff;border-radius:8px}
.app-small{font-size:13px;color:#c4b7c8}
.app-preview{height:260px;background:#fffaf5;border-radius:27px 27px 0 0;padding:23px;color:var(--plum);position:relative;transform:rotate(3deg);box-shadow:0 15px 0 rgba(0,0,0,.12)}
.preview-head{display:flex;justify-content:space-between;font-weight:800}
.preview-line{height:10px;background:var(--apricot);border-radius:8px;margin-top:23px}
.preview-line.short{width:62%;margin-top:10px}
.preview-cards{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:25px}
.preview-card{height:78px;border-radius:14px;background:var(--lavender);padding:12px}
.preview-card i{display:block;width:28px;height:28px;border-radius:9px;background:var(--coral);margin-bottom:8px}
.mobile{background:var(--cream)}
.mobile-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.step{padding:25px 25px 25px 0;border-top:2px solid var(--coral);position:relative}
.step:not(:last-child){margin-right:24px}
.step-num{font-size:35px;color:var(--coral);font-weight:900}
.step h3{color:var(--plum);font-size:17px;margin:3px 0}
.step p{color:var(--muted);font-size:13px}
.featured{background:#fff}
.featured-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:28px}
.featured-main{background:var(--apricot);border-radius:var(--radius-lg);padding:34px;min-height:260px}
.featured-main h3{color:var(--plum);font-size:27px;line-height:1.4;margin:17px 0 10px}
.featured-main p,.featured-list p{color:var(--muted);font-size:14px}
.featured-list{display:grid;gap:13px}
.featured-list article{padding:19px 21px;border:1px solid var(--line);border-radius:14px}
.featured-list h3{color:var(--plum);font-size:16px;margin:6px 0}
.guide{background:var(--lavender)}
.guide-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}
.guide p{color:var(--muted);margin-top:15px}
.guide-lines{background:#fff;border-radius:var(--radius-lg);padding:10px 27px}
.guide-line{display:flex;gap:22px;padding:19px 0;border-bottom:1px solid var(--line)}
.guide-line:last-child{border:0}
.guide-line strong{color:var(--coral);font-size:19px}
.guide-line b{display:block;color:var(--plum)}
.guide-line span{display:block;color:var(--muted);font-size:13px}
.security{background:#f0f7f3}
.security-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;align-items:center}
.security-box{background:#fff;border-radius:var(--radius-lg);padding:28px;display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.security-item{padding:12px 0}
.security-item strong{display:block;color:var(--plum);margin-bottom:5px}
.security-item span{font-size:13px;color:var(--muted)}
.faq{background:#fff}
.faq-list{max-width:850px;margin:auto;border-top:1px solid var(--line)}
details{border-bottom:1px solid var(--line);padding:20px 0}
summary{cursor:pointer;color:var(--plum);font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:15px}
summary:after{content:"＋";color:var(--coral);font-size:20px}
details[open] summary:after{content:"－"}
details p{color:var(--muted);padding:13px 32px 0 0;font-size:14px}
.feedback{background:var(--apricot)}
.feedback-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px}
.feedback-copy p{color:var(--muted);margin-top:14px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{color:var(--plum);font-size:13px;font-weight:700}
.field input,.field textarea,.field select{border:1px solid var(--line);border-radius:10px;background:#fff;padding:12px 14px;color:var(--ink)}
.field textarea{min-height:105px;resize:vertical}
.privacy{font-size:12px;color:var(--muted);margin-top:12px}
.closing{padding:54px 0;background:var(--coral);color:#fff}
.closing-inner{display:flex;justify-content:space-between;align-items:center;gap:25px}
.closing h2{font-size:29px;line-height:1.35}
.closing p{color:#ffe7e0;margin-top:6px}
.closing .btn-secondary{border-color:#fff;color:#fff}
.closing .btn-secondary:hover{background:#fff;color:var(--coral)}
.site-footer{background:var(--plum);color:#fff;padding:62px 0 25px}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:40px;padding-bottom:45px}
.footer-brand p{color:#c6b9ca;max-width:280px;margin:16px 0}
.footer-title{font-weight:800;margin-bottom:13px}
.footer-links{display:grid;gap:8px}
.footer-links a{color:#c6b9ca;font-size:14px;transition:.2s}
.footer-links a:hover{color:#fff0e8;padding-left:3px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding-top:20px;color:#aa9caf;font-size:12px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.age-note{color:#f7c3b7}
@media(max-width:1024px){
  .main-nav a{padding:9px 8px;font-size:14px}
  .hero-grid,.interactive-grid,.security-grid,.feedback-layout{gap:35px}
  .app-card{padding:38px}
  .channel-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:767px){
  .container{width:min(100% - 32px,var(--container))}
  .site-header{height:68px}
  .header-action{display:none}
  .menu-toggle{display:block}
  .main-nav{display:none;position:absolute;left:16px;right:16px;top:75px;background:#fffaf5;border:1px solid var(--line);border-radius:16px;padding:9px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
  .main-nav.open{display:flex}
  .main-nav a{padding:13px 14px}
  .hero{padding:58px 0 55px}
  .hero-grid,.interactive-grid,.featured-layout,.guide-layout,.security-grid,.feedback-layout{grid-template-columns:1fr}
  .hero h1{font-size:39px}
  .hero-copy{font-size:16px}
  .hero-art{min-height:310px}
  .status-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .status-item{padding:5px 0;border:0}
  .section,.app-section{padding:58px 0}
  .section-head{display:block;margin-bottom:25px}
  .section-head p{margin-top:12px}
  .scene-list,.experience-list,.security-box{grid-template-columns:1fr}
  .experience-layout{grid-template-columns:1fr;gap:15px}
  .big-number{font-size:70px}
  .activity-grid{grid-template-columns:1fr}
  .activity-small + .activity-small{margin-top:0}
  .news-layout{grid-template-columns:1fr;gap:25px}
  .news-item{grid-template-columns:70px 1fr;gap:11px}
  .news-arrow{display:none}
  .news-item p{white-space:normal}
  .channel-grid{grid-template-columns:1fr 1fr}
  .app-card{grid-template-columns:1fr;padding:29px 23px;border-radius:22px}
  .app-card h2{font-size:29px}
  .mobile-steps{grid-template-columns:1fr 1fr;gap:10px}
  .step:not(:last-child){margin-right:0}
  .step{padding:17px 12px 17px 0}
  .form-grid{grid-template-columns:1fr}
  .field.full{grid-column:auto}
  .closing-inner{display:block}
  .closing .btn-secondary{margin-top:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:520px){
  .hero-actions{display:grid;grid-template-columns:1fr}
  .hero-actions a{width:100%}
  .channel-grid{grid-template-columns:1fr}
  .app-info{align-items:flex-start}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:auto}
}

/* roulang page: article */
:root{
      --coral:#ef6b4f;
      --coral-dark:#d9543b;
      --plum:#302039;
      --plum-2:#493052;
      --ink:#29242c;
      --muted:#746d76;
      --cream:#fffaf5;
      --apricot:#fff0e8;
      --lavender:#f3edf5;
      --line:#eadfe0;
      --white:#fff;
      --green:#4e8c70;
      --radius-lg:24px;
      --radius-md:16px;
      --radius-sm:10px;
      --shadow:0 16px 45px rgba(48,32,57,.08);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--cream);font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:rgba(255,250,245,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;color:var(--plum);font-weight:800;font-size:20px;white-space:nowrap}
    .logo-mark{width:38px;height:38px;border-radius:12px;background:var(--coral);position:relative;overflow:hidden;display:inline-block}
    .logo-mark:before,.logo-mark:after{content:"";position:absolute;border:3px solid #fff;border-radius:50%}
    .logo-mark:before{width:22px;height:22px;left:8px;top:7px}
    .logo-mark:after{width:8px;height:8px;background:#fff;border:0;left:15px;top:14px}
    .main-nav{display:flex;align-items:center;gap:4px}
    .main-nav a{padding:10px 13px;color:var(--muted);border-radius:9px;transition:.2s ease}
    .main-nav a:hover,.main-nav a.active{color:var(--plum);background:var(--lavender)}
    .header-action,.btn-primary{background:var(--coral);color:#fff;padding:12px 20px;border-radius:10px;font-weight:700;transition:.2s ease;display:inline-flex;align-items:center;justify-content:center;gap:8px}
    .header-action:hover,.btn-primary:hover{background:var(--coral-dark);transform:translateY(-2px);box-shadow:0 9px 20px rgba(239,107,79,.22)}
    .btn-secondary{display:inline-flex;align-items:center;justify-content:center;padding:11px 19px;border:1px solid var(--plum);color:var(--plum);border-radius:10px;font-weight:700;transition:.2s ease}
    .btn-secondary:hover{background:var(--plum);color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;background:transparent;color:var(--plum);font-size:25px;width:44px;height:44px}
    .btn-primary:focus,.btn-secondary:focus,.header-action:focus,.menu-toggle:focus,summary:focus{outline:3px solid rgba(239,107,79,.35);outline-offset:3px}
    .article-hero{padding:68px 0 54px;background:var(--apricot);border-bottom:1px solid var(--line)}
    .breadcrumbs{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;margin-bottom:25px}
    .breadcrumbs a:hover{color:var(--coral-dark)}
    .crumb-dot{width:5px;height:5px;background:var(--coral);border-radius:50%}
    .article-heading{max-width:850px}
    .eyebrow,.section-kicker{color:var(--coral-dark);font-weight:800;letter-spacing:.08em;font-size:13px}
    .article-heading h1{font-size:clamp(34px,5vw,60px);line-height:1.24;letter-spacing:-.04em;color:var(--plum);margin:15px 0 20px}
    .article-summary{max-width:790px;color:var(--muted);font-size:18px;line-height:1.9;margin:0}
    .article-meta{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:26px;color:var(--muted);font-size:13px}
    .meta-item{display:inline-flex;align-items:center;gap:8px}
    .meta-item strong{color:var(--plum)}
    .tag{font-size:12px;padding:4px 10px;border-radius:20px;background:#fff;color:var(--coral-dark);border:1px solid rgba(239,107,79,.18)}
    .article-layout{display:grid;grid-template-columns:minmax(0,790px) 280px;gap:70px;align-items:start;padding:72px 0 92px}
    .reading-bar{height:5px;background:var(--line);border-radius:10px;margin-bottom:30px;overflow:hidden}
    .reading-bar span{display:block;width:34%;height:100%;background:var(--coral);border-radius:10px}
    .article-content{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:44px 52px;box-shadow:var(--shadow);font-size:17px;line-height:2}
    .article-content h2{font-size:29px;line-height:1.35;color:var(--plum);margin:40px 0 17px}
    .article-content h3{font-size:22px;line-height:1.45;color:var(--plum-2);margin:30px 0 12px}
    .article-content p{margin:0 0 22px}
    .article-content ul,.article-content ol{padding-left:1.5em;margin:12px 0 25px}
    .article-content li{padding-left:6px;margin:5px 0}
    .article-content blockquote{margin:30px 0;padding:20px 24px;background:var(--apricot);border-left:4px solid var(--coral);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--plum)}
    .article-content table{width:100%;border-collapse:collapse;margin:25px 0;display:block;overflow-x:auto}
    .article-content th,.article-content td{border:1px solid var(--line);padding:11px 14px;text-align:left;white-space:nowrap}
    .article-content th{background:var(--lavender);color:var(--plum)}
    .article-content img{border-radius:14px;margin:28px auto}
    .article-content hr{border:0;border-top:1px solid var(--line);margin:35px 0}
    .article-content a{color:var(--coral-dark);text-decoration:underline;text-underline-offset:3px}
    .article-aside{position:sticky;top:105px}
    .aside-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);padding:23px;margin-bottom:17px}
    .aside-card h3{font-size:16px;color:var(--plum);margin:0 0 15px}
    .toc-list{display:grid;gap:11px;color:var(--muted);font-size:13px}
    .toc-list a{transition:.2s}
    .toc-list a:hover{color:var(--coral-dark);padding-left:4px}
    .aside-note{color:var(--muted);font-size:13px;line-height:1.8}
    .article-visual{margin:28px 0;background:var(--plum);border-radius:var(--radius-md);min-height:145px;padding:28px;color:#fff;position:relative;overflow:hidden}
    .article-visual:after{content:"";position:absolute;width:210px;height:210px;border:1px solid rgba(255,255,255,.18);border-radius:50%;right:-45px;top:-70px}
    .article-visual strong{font-size:20px;position:relative;z-index:1}
    .article-visual p{color:#ded2e0;max-width:540px;margin:8px 0 0;position:relative;z-index:1}
    .article-empty{text-align:center;padding:76px 25px}
    .empty-icon{width:64px;height:64px;border-radius:20px;background:var(--apricot);color:var(--coral);display:grid;place-items:center;font-size:28px;margin:0 auto 18px}
    .article-empty h2{color:var(--plum);font-size:26px;margin:0 0 10px}
    .article-empty p{color:var(--muted);margin:0 0 24px}
    .related-section{padding:0 0 88px}
    .related-box{background:var(--lavender);border-radius:var(--radius-lg);padding:30px 34px;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .related-box h2{color:var(--plum);font-size:24px;margin:0 0 5px}
    .related-box p{color:var(--muted);margin:0}
    .notice-section{padding:0 0 88px}
    .notice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .notice-card{padding:22px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md)}
    .notice-card b{display:block;color:var(--plum);margin-bottom:7px}
    .notice-card span{font-size:13px;color:var(--muted);line-height:1.8}
    .site-footer{background:var(--plum);color:#fff;padding:60px 0 24px}
    .footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:45px}
    .footer-brand p{color:#ded2e0;max-width:340px;margin:18px 0 12px}
    .age-note{font-size:12px;color:#cbbbcf}
    .footer-title{font-weight:800;margin-bottom:15px}
    .footer-links{display:grid;gap:9px;color:#cbbbcf;font-size:13px}
    .footer-links a{transition:.2s}
    .footer-links a:hover{color:#fff;padding-left:3px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:45px;padding-top:19px;display:flex;justify-content:space-between;gap:20px;color:#bfaec4;font-size:12px}
    @media(max-width:1024px){
      .main-nav a{padding:9px 8px;font-size:14px}
      .header-action{padding:11px 14px}
      .article-layout{grid-template-columns:minmax(0,1fr) 245px;gap:35px}
      .footer-grid{gap:25px}
    }
    @media(max-width:767px){
      .container{width:min(100% - 32px,var(--container))}
      .site-header{height:70px}
      .main-nav{display:none;position:absolute;left:16px;right:16px;top:78px;background:var(--white);border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}
      .main-nav a{padding:13px 14px}
      .header-action{display:none}
      .menu-toggle{display:block}
      .article-hero{padding:44px 0 38px}
      .article-heading h1{font-size:36px}
      .article-summary{font-size:16px}
      .article-layout{display:block;padding:42px 0 60px}
      .article-aside{position:static;margin-top:22px}
      .article-content{padding:27px 20px;font-size:16px;line-height:1.9}
      .article-content h2{font-size:25px;margin-top:30px}
      .related-section,.notice-section{padding-bottom:60px}
      .related-box{display:block;padding:25px 22px}
      .related-box .btn-secondary{margin-top:18px;width:100%}
      .notice-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block;line-height:2}
      .footer-bottom span{display:block}
    }
    @media(max-width:520px){
      .logo{font-size:17px}
      .logo-mark{width:34px;height:34px}
      .logo-mark:before{left:6px;top:5px}
      .logo-mark:after{left:13px;top:12px}
      .breadcrumbs{font-size:12px;overflow:hidden;white-space:nowrap}
      .article-heading h1{font-size:31px}
      .article-meta{gap:8px 15px}
      .article-content{border-radius:16px}
      .footer-grid{grid-template-columns:1fr}
    }

/* roulang page: category1 */
:root{
      --coral:#ef6b4f;
      --coral-dark:#d9543b;
      --plum:#302039;
      --plum-2:#493052;
      --ink:#29242c;
      --muted:#746d76;
      --cream:#fffaf5;
      --apricot:#fff0e8;
      --lavender:#f3edf5;
      --line:#eadfe0;
      --white:#fff;
      --green:#4e8c70;
      --radius-lg:24px;
      --radius-md:16px;
      --radius-sm:10px;
      --shadow:0 16px 45px rgba(48,32,57,.08);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--cream);line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    a:hover{text-decoration:none}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:rgba(255,250,245,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;color:var(--plum);font-weight:800;font-size:20px;white-space:nowrap}
    .logo-mark{width:38px;height:38px;border-radius:12px;background:var(--coral);position:relative;overflow:hidden;display:inline-block}
    .logo-mark:before,.logo-mark:after{content:"";position:absolute;border:3px solid #fff;border-radius:50%}
    .logo-mark:before{width:22px;height:22px;left:8px;top:7px}
    .logo-mark:after{width:8px;height:8px;background:#fff;border:0;left:15px;top:14px}
    .main-nav{display:flex;align-items:center;gap:4px}
    .main-nav a{padding:10px 13px;color:var(--muted);border-radius:9px;transition:.2s ease}
    .main-nav a:hover,.main-nav a.active{color:var(--plum);background:var(--lavender)}
    .header-action,.btn-primary{background:var(--coral);color:#fff;padding:12px 20px;border-radius:10px;font-weight:700;transition:.2s ease;display:inline-flex;align-items:center;justify-content:center;gap:8px}
    .header-action:hover,.btn-primary:hover{background:var(--coral-dark);transform:translateY(-2px);box-shadow:0 9px 20px rgba(239,107,79,.22)}
    .menu-toggle{display:none;background:transparent;color:var(--plum);font-size:25px;width:44px;height:44px}
    .btn-secondary{display:inline-flex;align-items:center;justify-content:center;padding:11px 19px;border:1px solid var(--plum);color:var(--plum);border-radius:10px;font-weight:700;transition:.2s ease}
    .btn-secondary:hover{background:var(--plum);color:#fff;transform:translateY(-2px)}
    .btn-primary:focus,.btn-secondary:focus,.header-action:focus,.menu-toggle:focus,summary:focus{outline:3px solid rgba(239,107,79,.35);outline-offset:3px}
    .page-intro{padding:76px 0 58px;background:var(--apricot);border-bottom:1px solid var(--line)}
    .intro-grid{display:grid;grid-template-columns:1fr .72fr;gap:70px;align-items:end}
    .eyebrow,.section-kicker{color:var(--coral-dark);font-weight:800;letter-spacing:.08em;font-size:13px}
    h1,h2,h3,p{margin-top:0}
    .page-intro h1{font-size:clamp(38px,5vw,64px);line-height:1.18;letter-spacing:-.045em;color:var(--plum);margin:16px 0 20px}
    .page-intro h1 em{font-style:normal;color:var(--coral)}
    .intro-copy{font-size:18px;color:var(--muted);max-width:680px;line-height:1.9;margin-bottom:0}
    .intro-aside{background:var(--plum);color:#fff;border-radius:var(--radius-lg);padding:26px 28px;position:relative;overflow:hidden}
    .intro-aside:after{content:"";position:absolute;width:170px;height:170px;border:1px solid rgba(255,255,255,.2);border-radius:50%;right:-45px;bottom:-75px}
    .aside-label{font-size:12px;color:#ffc3b5;letter-spacing:.08em}
    .intro-aside strong{display:block;font-size:25px;line-height:1.35;margin:9px 0 8px;position:relative;z-index:1}
    .intro-aside span:last-child{color:#ded2e0;font-size:13px;position:relative;z-index:1}
    .section{padding:82px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:32px}
    .section-head h2{color:var(--plum);font-size:clamp(27px,3vw,40px);line-height:1.25;margin:8px 0 0}
    .section-head p{color:var(--muted);max-width:540px;margin-bottom:0}
    .content-layout{display:grid;grid-template-columns:.74fr 1.26fr;gap:58px;align-items:start}
    .side-note{border-left:4px solid var(--coral);padding:4px 0 4px 23px}
    .side-note h2{color:var(--plum);font-size:28px;line-height:1.4;margin-bottom:13px}
    .side-note p{color:var(--muted);line-height:1.9}
    .side-list{margin:26px 0 0;padding:0;list-style:none}
    .side-list li{padding:12px 0;border-bottom:1px solid var(--line);color:var(--plum)}
    .side-list b{color:var(--coral);margin-right:10px}
    .news-list{border-top:1px solid var(--line)}
    .news-item{display:grid;grid-template-columns:92px 1fr auto;gap:20px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line);transition:.2s}
    .news-item:hover{padding-left:8px;background:rgba(255,240,232,.35)}
    .news-date{font-size:12px;color:var(--coral-dark);font-weight:700}
    .news-item h3{font-size:18px;color:var(--plum);margin:0 0 5px;line-height:1.45}
    .news-item p{color:var(--muted);font-size:13px;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .news-meta{display:inline-block;font-size:12px;color:var(--muted);margin-left:9px}
    .news-arrow{color:var(--coral);font-size:21px}
    .empty-state{padding:38px 20px;border:1px dashed #d9c9ca;border-radius:var(--radius-md);text-align:center;color:var(--muted);background:#fff}
    .empty-icon{font-size:26px;color:var(--coral);display:block;margin-bottom:8px}
    .feature-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .feature-card,.mini-card{border-radius:var(--radius-lg);padding:30px;border:1px solid var(--line);background:#fff;transition:.25s ease}
    .feature-card{background:var(--plum);color:#fff;min-height:245px;position:relative;overflow:hidden}
    .feature-card:after{content:"";position:absolute;width:210px;height:210px;border:1px solid rgba(255,255,255,.18);border-radius:50%;right:-55px;bottom:-105px}
    .feature-card h3{font-size:28px;line-height:1.35;margin:20px 0 10px;position:relative;z-index:1}
    .feature-card p{color:#ddd0df;max-width:520px;position:relative;z-index:1}
    .mini-stack{display:grid;gap:18px}
    .mini-card:hover,.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .mini-card h3{font-size:19px;color:var(--plum);margin:12px 0 6px}
    .mini-card p{font-size:13px;color:var(--muted);margin-bottom:0}
    .tag{display:inline-block;font-size:12px;padding:4px 10px;border-radius:20px;background:var(--apricot);color:var(--coral-dark)}
    .scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .scene-card{padding:25px;border-radius:var(--radius-md);background:var(--lavender);border:1px solid transparent;transition:.2s}
    .scene-card:hover{border-color:#d8c5dc;transform:translateY(-2px)}
    .scene-card .number{font-size:34px;font-weight:800;color:var(--coral)}
    .scene-card h3{font-size:18px;color:var(--plum);margin:9px 0 6px}
    .scene-card p{font-size:13px;color:var(--muted);margin:0}
    .app-strip{padding:64px 0}
    .app-card{background:var(--plum);border-radius:30px;color:#fff;padding:43px 48px;display:grid;grid-template-columns:1fr .85fr;gap:48px;align-items:center;overflow:hidden}
    .app-card h2{font-size:35px;line-height:1.35;margin:12px 0 14px}
    .app-card p{color:#ded2e0;max-width:540px}
    .app-points{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}
    .app-points span{padding:8px 12px;border-radius:8px;background:rgba(255,255,255,.1);font-size:13px;color:#f8e9e9}
    .device-panel{min-height:210px;border:1px solid rgba(255,255,255,.2);border-radius:22px;padding:22px;background:rgba(255,255,255,.06);position:relative}
    .device-bar{height:11px;width:90px;border-radius:20px;background:var(--coral);margin-bottom:24px}
    .device-line{height:12px;border-radius:8px;background:rgba(255,255,255,.18);margin:13px 0}
    .device-line.short{width:62%}
    .device-chip{display:inline-block;margin-top:12px;background:#fff0e8;color:var(--coral-dark);padding:9px 12px;border-radius:9px;font-size:12px}
    .security{background:#f6f0eb}
    .security-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .security-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:25px}
    .security-card .symbol{width:40px;height:40px;border-radius:12px;background:#e8f2ed;color:var(--green);display:grid;place-items:center;font-weight:800;margin-bottom:15px}
    .security-card h3{font-size:18px;color:var(--plum);margin-bottom:7px}
    .security-card p{font-size:13px;color:var(--muted);margin-bottom:0}
    .faq-list{max-width:850px;margin:0 auto}
    details{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:12px;padding:0 22px}
    summary{cursor:pointer;list-style:none;padding:19px 0;color:var(--plum);font-weight:700;position:relative;padding-right:30px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"＋";position:absolute;right:0;color:var(--coral);font-size:21px;top:15px}
    details[open] summary:after{content:"－"}
    details p{color:var(--muted);font-size:14px;border-top:1px solid var(--line);padding:15px 0 18px;margin:0}
    .cta-section{padding:25px 0 86px}
    .cta-card{background:var(--apricot);border-radius:var(--radius-lg);padding:34px 40px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta-card h2{font-size:27px;color:var(--plum);margin-bottom:6px}
    .cta-card p{color:var(--muted);margin:0}
    .site-footer{background:var(--plum);color:#fff;padding:58px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:40px}
    .footer-brand .logo{color:#fff!important;margin-bottom:17px}
    .footer-brand p{color:#d9ccd9;max-width:330px;font-size:13px}
    .age-note{display:inline-block;color:#ffc3b5;font-size:12px;line-height:1.6}
    .footer-title{font-weight:700;margin-bottom:16px;color:#fff}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:#d9ccd9;font-size:13px;transition:.2s}
    .footer-links a:hover{color:#fff0e8;padding-left:3px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.15);margin-top:42px;padding-top:19px;display:flex;justify-content:space-between;gap:20px;color:#bcaebd;font-size:12px}
    @media(max-width:1024px){
      .main-nav a{padding:9px 8px;font-size:14px}
      .intro-grid,.content-layout{gap:36px}
      .app-card{padding:36px}
    }
    @media(max-width:767px){
      .container{width:min(100% - 32px,var(--container))}
      .site-header{height:68px}
      .header-inner{gap:10px}
      .logo{font-size:17px}
      .logo-mark{width:34px;height:34px;border-radius:10px}
      .header-action{padding:9px 12px;font-size:13px}
      .menu-toggle{display:block}
      .main-nav{display:none;position:absolute;left:16px;right:16px;top:74px;padding:10px;background:#fffaf5;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}
      .main-nav a{padding:13px 15px}
      .page-intro{padding:55px 0 42px}
      .intro-grid,.content-layout,.feature-grid,.app-card{grid-template-columns:1fr}
      .page-intro h1{font-size:40px}
      .intro-copy{font-size:16px}
      .section{padding:58px 0}
      .section-head{display:block;margin-bottom:24px}
      .section-head p{margin-top:12px}
      .news-item{grid-template-columns:1fr auto;gap:5px 12px;padding:18px 0}
      .news-date{grid-column:1/2}
      .news-item h3{grid-column:1/2;font-size:16px}
      .news-item p{grid-column:1/2;white-space:normal}
      .news-arrow{grid-column:2;grid-row:1/4;align-self:center}
      .scene-grid,.security-grid{grid-template-columns:1fr}
      .app-strip{padding:45px 0}
      .app-card{padding:30px 24px}
      .app-card h2{font-size:29px}
      .cta-card{display:block;padding:27px 24px}
      .cta-card .btn-primary{margin-top:20px;width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px 20px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block;line-height:2}
    }
    @media(max-width:520px){
      .header-action{display:none}
      .page-intro h1{font-size:34px}
      .feature-card,.mini-card{padding:23px}
      .intro-aside{padding:22px}
    }

/* roulang page: category3 */
:root{
      --coral:#ef6b4f;--coral-dark:#d9543b;--plum:#302039;--plum-2:#493052;
      --ink:#29242c;--muted:#746d76;--cream:#fffaf5;--apricot:#fff0e8;
      --lavender:#f3edf5;--line:#eadfe0;--white:#fff;--green:#4e8c70;
      --radius-lg:24px;--radius-md:16px;--radius-sm:10px;
      --shadow:0 16px 45px rgba(48,32,57,.08);--container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--cream);line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    a:hover{color:var(--coral-dark)}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:rgba(255,250,245,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;color:var(--plum);font-weight:800;font-size:20px;white-space:nowrap}
    .logo-mark{width:38px;height:38px;border-radius:12px;background:var(--coral);position:relative;overflow:hidden}
    .logo-mark:before,.logo-mark:after{content:"";position:absolute;border:3px solid #fff;border-radius:50%}
    .logo-mark:before{width:22px;height:22px;left:8px;top:7px}
    .logo-mark:after{width:8px;height:8px;background:#fff;border:0;left:15px;top:14px}
    .main-nav{display:flex;align-items:center;gap:4px}
    .main-nav a{padding:10px 13px;color:var(--muted);border-radius:9px;transition:.2s ease}
    .main-nav a:hover,.main-nav a.active{color:var(--plum);background:var(--lavender)}
    .header-action,.btn-primary{background:var(--coral);color:#fff;padding:12px 20px;border-radius:10px;font-weight:700;transition:.2s ease;display:inline-flex;align-items:center;justify-content:center;gap:8px}
    .header-action:hover,.btn-primary:hover{background:var(--coral-dark);color:#fff;transform:translateY(-2px);box-shadow:0 9px 20px rgba(239,107,79,.22)}
    .menu-toggle{display:none;background:transparent;color:var(--plum);font-size:25px;width:44px;height:44px}
    .btn-secondary{display:inline-flex;align-items:center;justify-content:center;padding:11px 19px;border:1px solid var(--plum);color:var(--plum);border-radius:10px;font-weight:700;transition:.2s ease}
    .btn-secondary:hover{background:var(--plum);color:#fff;transform:translateY(-2px)}
    .btn-primary:focus,.btn-secondary:focus,.header-action:focus,.menu-toggle:focus,a:focus{outline:3px solid rgba(239,107,79,.35);outline-offset:3px}
    .page-intro{padding:76px 0 64px;background:var(--apricot);border-bottom:1px solid var(--line)}
    .intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end}
    .eyebrow,.section-kicker{color:var(--coral-dark);font-weight:800;letter-spacing:.08em;font-size:13px}
    h1,h2,h3{color:var(--plum);line-height:1.3}
    h1{font-size:clamp(38px,5vw,62px);letter-spacing:-.045em;margin:16px 0 20px}
    .intro-copy{font-size:18px;color:var(--muted);max-width:680px}
    .update-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow)}
    .update-panel strong{font-size:30px;color:var(--plum);display:block}
    .update-panel span{color:var(--muted)}
    .section{padding:78px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:28px}
    .section-head h2{font-size:clamp(27px,3vw,40px);margin:8px 0 0}
    .section-head p{color:var(--muted);max-width:500px;margin:0}
    .news-layout{display:grid;grid-template-columns:.32fr .68fr;gap:60px}
    .filter-note{background:var(--plum);color:#fff;border-radius:var(--radius-lg);padding:28px;position:sticky;top:105px;height:max-content}
    .filter-note h3{color:#fff;font-size:22px;margin:0 0 12px}
    .filter-note p{color:#dfd2e0;margin:0 0 22px}
    .tag-row{display:flex;gap:8px;flex-wrap:wrap}
    .tag{display:inline-block;font-size:12px;padding:4px 10px;border-radius:20px;background:var(--apricot);color:var(--coral-dark)}
    .tag.dark{background:rgba(255,255,255,.13);color:#fff}
    .news-list{border-top:1px solid var(--line)}
    .news-item{display:grid;grid-template-columns:105px 1fr 26px;gap:22px;align-items:center;padding:23px 0;border-bottom:1px solid var(--line);transition:.2s}
    .news-item:hover{padding-left:8px;background:rgba(243,237,245,.35)}
    .news-date{font-size:13px;color:var(--muted)}
    .news-item h3{font-size:18px;margin:0 0 5px}
    .news-item p{color:var(--muted);font-size:13px;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .news-arrow{color:var(--coral);font-size:22px}
    .empty-state{padding:44px 24px;text-align:center;border:1px dashed #d9c9cb;border-radius:var(--radius-md);color:var(--muted);background:#fff}
    .feature-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}
    .feature-card,.support-card{border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;padding:30px}
    .feature-card{background:var(--lavender);min-height:230px}
    .feature-card h3,.support-card h3{font-size:24px;margin:14px 0 10px}
    .feature-card p,.support-card p{color:var(--muted);margin:0}
    .support-stack{display:grid;gap:18px}
    .icon-dot{width:42px;height:42px;border-radius:13px;background:var(--coral);color:#fff;display:grid;place-items:center;font-weight:800}
    .app-band{padding:76px 0}
    .app-card{background:var(--plum);border-radius:30px;color:#fff;padding:42px 48px;display:grid;grid-template-columns:1fr .8fr;gap:45px;align-items:center;overflow:hidden}
    .app-card h2{color:#fff;font-size:35px;margin:12px 0}
    .app-card p{color:#ded2e0;max-width:530px}
    .app-info{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
    .app-info span{padding:8px 12px;border:1px solid rgba(255,255,255,.2);border-radius:8px;color:#f2e8f1;font-size:13px}
    .app-visual{background:var(--apricot);border-radius:22px;padding:22px;color:var(--plum);min-height:190px}
    .app-visual b{font-size:18px}
    .visual-line{height:10px;border-radius:8px;background:#f4c2b5;margin-top:18px}
    .visual-line.short{width:62%;background:#d6c6db;margin-top:10px}
    .faq-list{max-width:850px;margin:0 auto}
    details{border-bottom:1px solid var(--line);padding:20px 0}
    summary{cursor:pointer;list-style:none;font-size:17px;font-weight:700;color:var(--plum);display:flex;justify-content:space-between;gap:18px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"＋";color:var(--coral);font-size:22px}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);margin:12px 28px 0 0}
    .safety{background:var(--lavender)}
    .safety-box{display:flex;gap:18px;align-items:flex-start;max-width:850px}
    .safety-box h2{margin:0 0 9px}
    .safety-box p{color:var(--muted);margin:0}
    .closing{padding:34px 0;background:var(--coral);color:#fff}
    .closing-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
    .closing h2{color:#fff;margin:0;font-size:27px}
    .closing .btn-secondary{border-color:#fff;color:#fff}
    .closing .btn-secondary:hover{background:#fff;color:var(--plum)}
    .site-footer{background:var(--plum);color:#fff;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.7fr repeat(3,1fr);gap:35px}
    .footer-brand p{color:#d9cddd;max-width:340px;margin:16px 0}
    .age-note{font-size:12px;color:#c7b9ca}
    .footer-title{font-weight:700;margin-bottom:15px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:#d9cddd;font-size:14px}
    .footer-links a:hover{color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.15);margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#bfaec3;font-size:12px}
    @media(max-width:1024px){
      .main-nav a{padding:9px 8px}.header-action{padding:10px 14px}
      .intro-grid,.news-layout{gap:35px}.app-card{padding:36px}
    }
    @media(max-width:767px){
      .container{width:min(100% - 32px,var(--container))}
      .site-header{height:70px}.header-action{display:none}.menu-toggle{display:block}
      .main-nav{display:none;position:absolute;top:70px;left:0;right:0;padding:16px;background:var(--cream);border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}.main-nav a{padding:13px 16px}
      .page-intro{padding:54px 0 45px}.intro-grid,.news-layout,.feature-grid,.app-card{grid-template-columns:1fr}
      h1{font-size:40px}.intro-copy{font-size:16px}.update-panel{padding:22px}
      .section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:12px}
      .filter-note{position:static}.news-item{grid-template-columns:78px 1fr 18px;gap:12px}.news-item p{white-space:normal}
      .app-band{padding:58px 0}.app-card{padding:28px 22px}.app-card h2{font-size:29px}
      .closing-inner{display:block}.closing .btn-secondary{margin-top:18px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
    }
    @media(max-width:520px){
      .logo{font-size:17px}.logo-mark{width:34px;height:34px}
      .news-item{grid-template-columns:1fr 20px}.news-date{grid-column:1/-1}
      .support-card,.feature-card{padding:23px}.footer-grid{grid-template-columns:1fr}
    }

/* roulang page: category2 */
:root{
      --coral:#ef6b4f;
      --coral-dark:#d9543b;
      --plum:#302039;
      --plum-2:#493052;
      --ink:#29242c;
      --muted:#746d76;
      --cream:#fffaf5;
      --apricot:#fff0e8;
      --lavender:#f3edf5;
      --line:#eadfe0;
      --white:#fff;
      --green:#4e8c70;
      --radius-lg:24px;
      --radius-md:16px;
      --radius-sm:10px;
      --shadow:0 16px 45px rgba(48,32,57,.08);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--cream);line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0}
    h1,h2,h3,p{margin:0}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:rgba(255,250,245,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;color:var(--plum);font-weight:800;font-size:20px;white-space:nowrap}
    .logo-mark{width:38px;height:38px;border-radius:12px;background:var(--coral);position:relative;overflow:hidden}
    .logo-mark:before,.logo-mark:after{content:"";position:absolute;border:3px solid #fff;border-radius:50%}
    .logo-mark:before{width:22px;height:22px;left:8px;top:7px}
    .logo-mark:after{width:8px;height:8px;background:#fff;border:0;left:15px;top:14px}
    .main-nav{display:flex;align-items:center;gap:4px}
    .main-nav a{padding:10px 13px;color:var(--muted);border-radius:9px;transition:.2s ease}
    .main-nav a:hover,.main-nav a.active{color:var(--plum);background:var(--lavender)}
    .header-action,.btn-primary{background:var(--coral);color:#fff;padding:12px 20px;border-radius:10px;font-weight:700;transition:.2s ease;display:inline-flex;align-items:center;justify-content:center;gap:8px}
    .header-action:hover,.btn-primary:hover{background:var(--coral-dark);transform:translateY(-2px);box-shadow:0 9px 20px rgba(239,107,79,.22)}
    .menu-toggle{display:none;background:transparent;color:var(--plum);font-size:25px;width:44px;height:44px}
    .btn-secondary{display:inline-flex;align-items:center;justify-content:center;padding:11px 19px;border:1px solid var(--plum);color:var(--plum);border-radius:10px;font-weight:700;transition:.2s ease}
    .btn-secondary:hover{background:var(--plum);color:#fff;transform:translateY(-2px)}
    .btn-primary:focus,.btn-secondary:focus,.header-action:focus,.menu-toggle:focus,summary:focus{outline:3px solid rgba(239,107,79,.35);outline-offset:3px}
    .page-intro{padding:76px 0 62px;background:var(--apricot);border-bottom:1px solid var(--line)}
    .intro-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:end;gap:60px}
    .eyebrow,.section-kicker{color:var(--coral-dark);font-weight:800;letter-spacing:.08em;font-size:13px}
    .page-intro h1{color:var(--plum);font-size:clamp(38px,5vw,64px);line-height:1.18;letter-spacing:-.045em;margin:17px 0 20px}
    .page-intro h1 em{font-style:normal;color:var(--coral)}
    .intro-copy{font-size:18px;color:var(--muted);line-height:1.9;max-width:640px}
    .intro-note{background:var(--white);border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:var(--shadow)}
    .intro-note strong{display:block;color:var(--plum);font-size:19px;margin-bottom:8px}
    .intro-note p{color:var(--muted)}
    .section{padding:82px 0}
    .section.alt{background:var(--lavender)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:32px}
    .section-head h2{color:var(--plum);font-size:clamp(27px,3vw,40px);line-height:1.25;margin-top:8px}
    .section-head p{color:var(--muted);max-width:540px}
    .experience-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:58px;align-items:start}
    .experience-index{background:var(--plum);color:#fff;border-radius:var(--radius-lg);padding:30px;min-height:290px;position:relative;overflow:hidden}
    .experience-index:after{content:"";position:absolute;width:190px;height:190px;border:1px solid rgba(255,255,255,.2);border-radius:50%;right:-55px;bottom:-70px}
    .experience-index .number{font-size:76px;font-weight:800;line-height:1;color:var(--coral)}
    .experience-index h3{font-size:25px;margin:22px 0 8px;position:relative;z-index:1}
    .experience-index p{color:#ded2e0;position:relative;z-index:1}
    .feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .feature-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);padding:23px;transition:.2s ease}
    .feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#e9b2a6}
    .feature-icon{width:38px;height:38px;border-radius:11px;background:var(--apricot);color:var(--coral-dark);display:grid;place-items:center;font-weight:800;margin-bottom:16px}
    .feature-card h3{font-size:18px;color:var(--plum);margin-bottom:6px}
    .feature-card p{color:var(--muted);font-size:14px}
    .scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .scene-card{padding:28px;background:var(--white);border-radius:20px;border:1px solid var(--line);min-height:205px}
    .scene-card:nth-child(2){background:var(--plum);color:#fff}
    .scene-card:nth-child(2) h3{color:#fff}
    .scene-card:nth-child(2) p{color:#ded2e0}
    .scene-card h3{font-size:21px;color:var(--plum);margin:28px 0 8px}
    .scene-card p{color:var(--muted)}
    .tag{display:inline-block;font-size:12px;padding:4px 9px;border-radius:20px;background:var(--apricot);color:var(--coral-dark)}
    .device-section{background:var(--cream)}
    .device-layout{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
    .device-copy h2{font-size:38px;line-height:1.3;color:var(--plum);margin:10px 0 16px}
    .device-copy p{color:var(--muted);font-size:17px}
    .device-points{display:grid;gap:13px;margin:25px 0 30px}
    .device-point{display:flex;gap:13px;align-items:flex-start}
    .device-point b{color:var(--plum)}
    .device-point span{color:var(--muted)}
    .device-visual{min-height:350px;border-radius:30px;background:var(--plum);padding:28px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
    .device-visual:before{content:"";position:absolute;width:260px;height:260px;border-radius:50%;background:rgba(239,107,79,.27);right:-80px;top:-90px}
    .phone{width:205px;height:310px;border:7px solid #fff;border-radius:28px;background:var(--cream);padding:14px;position:relative;z-index:1;box-shadow:0 20px 35px rgba(0,0,0,.2)}
    .phone-top{height:24px;border-bottom:1px solid var(--line);color:var(--plum);font-weight:800;font-size:12px}
    .phone-banner{height:70px;background:var(--apricot);border-radius:12px;margin:13px 0;padding:12px;color:var(--plum);font-size:14px;font-weight:700}
    .phone-row{height:42px;border-radius:10px;background:#fff;border:1px solid var(--line);margin:8px 0;padding:10px;font-size:11px;color:var(--muted)}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
    .step{padding:25px 20px 8px;border-right:1px solid var(--line)}
    .step:last-child{border:0}
    .step-num{color:var(--coral);font-size:30px;font-weight:800;line-height:1}
    .step h3{font-size:17px;color:var(--plum);margin:15px 0 7px}
    .step p{font-size:14px;color:var(--muted)}
    .app-strip{padding:54px 0}
    .app-card{background:var(--plum);border-radius:30px;color:#fff;padding:42px 48px;display:flex;align-items:center;justify-content:space-between;gap:35px}
    .app-card h2{font-size:34px;line-height:1.3;margin:9px 0 12px}
    .app-card p{color:#ded2e0;max-width:650px}
    .app-meta{display:flex;gap:10px;flex-wrap:wrap;margin:19px 0 25px}
    .app-meta span{border:1px solid rgba(255,255,255,.25);padding:6px 11px;border-radius:8px;font-size:12px;color:#eee}
    .faq-list{max-width:900px;margin:0 auto;border-top:1px solid var(--line)}
    details{border-bottom:1px solid var(--line);padding:21px 0}
    summary{cursor:pointer;list-style:none;color:var(--plum);font-weight:800;font-size:17px;display:flex;justify-content:space-between;gap:20px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"＋";color:var(--coral);font-size:22px;font-weight:400}
    details[open] summary:after{content:"－"}
    details p{color:var(--muted);padding:13px 40px 0 0;max-width:780px}
    .safety{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:stretch}
    .safety-card{padding:28px;border-radius:20px;background:var(--white);border:1px solid var(--line)}
    .safety-card h3{color:var(--plum);font-size:20px;margin-bottom:10px}
    .safety-card p{color:var(--muted)}
    .site-footer{background:var(--plum);color:#fff;padding:58px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:40px}
    .footer-brand .logo{color:#fff!important;margin-bottom:16px}
    .footer-brand p{color:#ded2e0;max-width:330px;margin-bottom:14px}
    .age-note{font-size:12px;color:#c9b9cc}
    .footer-title{font-weight:800;margin-bottom:16px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:#c9b9cc;transition:.2s}
    .footer-links a:hover{color:#fff;padding-left:3px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.15);margin-top:42px;padding-top:19px;display:flex;justify-content:space-between;gap:20px;color:#bbaabd;font-size:12px}
    @media(max-width:1024px){
      .main-nav a{padding:9px 8px;font-size:14px}
      .header-action{padding:11px 14px}
      .intro-grid,.device-layout{gap:35px}
      .experience-layout{gap:30px}
      .footer-grid{grid-template-columns:1.4fr repeat(3,1fr);gap:22px}
    }
    @media(max-width:767px){
      .container{width:min(100% - 32px,var(--container))}
      .site-header{height:68px}
      .main-nav{display:none;position:absolute;top:68px;left:0;right:0;padding:13px 16px;background:var(--cream);border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}
      .main-nav a{padding:13px 14px}
      .header-action{display:none}
      .menu-toggle{display:block}
      .logo{font-size:17px}
      .logo-mark{width:34px;height:34px}
      .page-intro{padding:55px 0 45px}
      .intro-grid,.experience-layout,.device-layout,.safety{grid-template-columns:1fr}
      .page-intro h1{font-size:40px}
      .intro-copy{font-size:16px}
      .section{padding:58px 0}
      .section-head{display:block;margin-bottom:24px}
      .section-head p{margin-top:12px}
      .feature-list,.scene-grid{grid-template-columns:1fr}
      .experience-index{min-height:230px}
      .device-copy h2{font-size:30px}
      .device-visual{min-height:320px}
      .steps{grid-template-columns:1fr 1fr;border-top:0}
      .step{padding:18px 12px;border-top:1px solid var(--line)}
      .step:nth-child(2){border-right:0}
      .app-card{display:block;padding:30px 24px}
      .app-card h2{font-size:29px}
      .app-card .btn-primary{width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px 18px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block;line-height:2}
      .footer-bottom span{display:block}
    }
    @media(max-width:520px){
      .page-intro h1{font-size:34px}
      .feature-card,.scene-card,.safety-card{padding:21px}
      .steps{grid-template-columns:1fr}
      .step{border-right:0!important}
      .phone{transform:scale(.92)}
    }

/* roulang page: category4 */
:root{
      --coral:#ef6b4f;
      --coral-dark:#d9543b;
      --plum:#302039;
      --plum-2:#493052;
      --ink:#29242c;
      --muted:#746d76;
      --cream:#fffaf5;
      --apricot:#fff0e8;
      --lavender:#f3edf5;
      --line:#eadfe0;
      --white:#fff;
      --green:#4e8c70;
      --radius-lg:24px;
      --radius-md:16px;
      --radius-sm:10px;
      --shadow:0 16px 45px rgba(48,32,57,.08);
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--cream);line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:rgba(255,250,245,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;color:var(--plum);font-weight:800;font-size:20px;white-space:nowrap}
    .logo-mark{width:38px;height:38px;border-radius:12px;background:var(--coral);position:relative;overflow:hidden}
    .logo-mark:before,.logo-mark:after{content:"";position:absolute;border:3px solid #fff;border-radius:50%}
    .logo-mark:before{width:22px;height:22px;left:8px;top:7px}
    .logo-mark:after{width:8px;height:8px;background:#fff;border:0;left:15px;top:14px}
    .main-nav{display:flex;align-items:center;gap:4px}
    .main-nav a{padding:10px 13px;color:var(--muted);border-radius:9px;transition:.2s ease}
    .main-nav a:hover,.main-nav a.active{color:var(--plum);background:var(--lavender)}
    .header-action,.btn-primary{background:var(--coral);color:#fff;padding:12px 20px;border-radius:10px;font-weight:700;transition:.2s ease;display:inline-flex;align-items:center;justify-content:center;gap:8px}
    .header-action:hover,.btn-primary:hover{background:var(--coral-dark);transform:translateY(-2px);box-shadow:0 9px 20px rgba(239,107,79,.22)}
    .menu-toggle{display:none;background:transparent;color:var(--plum);font-size:25px;width:44px;height:44px}
    .btn-secondary{display:inline-flex;align-items:center;justify-content:center;padding:11px 19px;border:1px solid var(--plum);color:var(--plum);border-radius:10px;font-weight:700;transition:.2s ease}
    .btn-secondary:hover{background:var(--plum);color:#fff;transform:translateY(-2px)}
    .btn-primary:focus,.btn-secondary:focus,.header-action:focus,.menu-toggle:focus,summary:focus{outline:3px solid rgba(239,107,79,.35);outline-offset:3px}
    .page-intro{padding:78px 0 48px;background:var(--apricot)}
    .eyebrow,.section-kicker{color:var(--coral-dark);font-weight:800;letter-spacing:.08em;font-size:13px}
    .page-intro h1{font-size:clamp(36px,5vw,62px);line-height:1.2;letter-spacing:-.045em;color:var(--plum);max-width:780px;margin:17px 0 20px}
    .page-intro h1 em{font-style:normal;color:var(--coral)}
    .lead{font-size:18px;color:var(--muted);max-width:720px;line-height:1.9;margin:0}
    .section{padding:82px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:32px}
    .section-head h2{color:var(--plum);font-size:clamp(27px,3vw,40px);line-height:1.25;margin:8px 0 0}
    .section-head p{color:var(--muted);max-width:510px;margin:0}
    .download-shell{display:grid;grid-template-columns:1fr .95fr;gap:54px;align-items:stretch}
    .download-panel{background:var(--plum);border-radius:var(--radius-lg);padding:42px;color:#fff;box-shadow:var(--shadow)}
    .download-panel h2{font-size:38px;line-height:1.3;margin:14px 0 14px}
    .download-panel p{color:#ded2e0;max-width:520px}
    .download-info{display:flex;gap:12px;flex-wrap:wrap;margin:25px 0}
    .download-info span{border:1px solid rgba(255,255,255,.2);color:#f7e8e2;border-radius:20px;padding:6px 12px;font-size:13px}
    .download-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
    .download-actions .btn-secondary{border-color:#fff;color:#fff}
    .download-actions .btn-secondary:hover{background:#fff;color:var(--plum)}
    .qr-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px;display:flex;align-items:center;justify-content:center;gap:30px;box-shadow:var(--shadow)}
    .qr-box{width:154px;height:154px;border:9px solid var(--plum);background:repeating-linear-gradient(45deg,#302039 0 4px,#fff 4px 8px);position:relative}
    .qr-box:after{content:"移动端入口";position:absolute;left:18px;right:18px;top:61px;text-align:center;background:#fff;color:var(--plum);font-size:12px;font-weight:800;padding:4px 0}
    .qr-card h3{color:var(--plum);font-size:21px;margin:0 0 8px}
    .qr-card p{color:var(--muted);font-size:13px;margin:0}
    .feature-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}
    .feature-card,.version-card,.safe-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:28px;transition:.2s ease}
    .feature-card:hover,.version-card:hover,.safe-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#e2b6ac}
    .feature-card.large{background:var(--lavender);min-height:252px}
    .feature-card h3,.version-card h3,.safe-card h3{color:var(--plum);font-size:21px;margin:13px 0 8px}
    .feature-card p,.version-card p,.safe-card p{color:var(--muted);margin:0}
    .feature-icon{width:45px;height:45px;border-radius:14px;background:var(--coral);color:#fff;display:grid;place-items:center;font-size:21px;font-weight:800}
    .feature-stack{display:grid;gap:20px}
    .phone-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:65px;align-items:center}
    .phone-stage{height:410px;background:var(--plum);border-radius:34px;position:relative;overflow:hidden;display:flex;justify-content:center;align-items:flex-end}
    .phone-stage:before{content:"";position:absolute;width:250px;height:250px;border-radius:50%;background:rgba(239,107,79,.28);top:-90px;right:-50px}
    .phone{width:190px;height:350px;background:#fff;border:8px solid #21152a;border-bottom:0;border-radius:28px 28px 0 0;padding:27px 14px 14px;position:relative;z-index:1;box-shadow:0 10px 30px rgba(0,0,0,.2)}
    .phone:before{content:"";position:absolute;top:9px;left:65px;width:52px;height:7px;border-radius:10px;background:#d7cbd9}
    .phone-head{height:54px;background:var(--apricot);border-radius:12px;margin-bottom:12px}
    .phone-line{height:12px;border-radius:8px;background:var(--lavender);margin:10px 0}
    .phone-line.short{width:62%}
    .phone-chip{height:72px;border-radius:12px;background:var(--coral);margin:16px 0}
    .step-list{display:grid;gap:0}
    .step{display:grid;grid-template-columns:54px 1fr;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
    .step:last-child{border-bottom:0}
    .step-num{width:42px;height:42px;border-radius:50%;background:var(--apricot);color:var(--coral-dark);display:grid;place-items:center;font-weight:800}
    .step h3{font-size:18px;color:var(--plum);margin:0 0 4px}
    .step p{color:var(--muted);margin:0}
    .support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .support-grid .safe-card:nth-child(2){background:var(--apricot)}
    .status-line{display:flex;align-items:center;gap:9px;color:var(--green);font-size:13px;font-weight:700;margin-bottom:10px}
    .status-dot{width:9px;height:9px;background:var(--green);border-radius:50%}
    .faq-wrap{max-width:850px;margin:0 auto}
    details{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:12px;padding:0 22px}
    summary{cursor:pointer;list-style:none;color:var(--plum);font-weight:700;padding:19px 0;position:relative;padding-right:30px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"＋";position:absolute;right:0;color:var(--coral);font-size:21px}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);border-top:1px solid var(--line);padding:15px 0 18px;margin:0}
    .cta-band{padding:46px 50px;background:var(--plum);border-radius:var(--radius-lg);display:flex;justify-content:space-between;align-items:center;gap:25px;color:#fff}
    .cta-band h2{font-size:30px;margin:0 0 7px}
    .cta-band p{color:#ded2e0;margin:0}
    .site-footer{background:var(--plum);color:#fff;padding:62px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:35px}
    .footer-brand p{color:#d8cadb;max-width:330px;margin:18px 0 12px}
    .age-note{font-size:12px;color:#c4b4c7}
    .footer-title{font-weight:800;margin-bottom:15px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:#d8cadb;font-size:14px;transition:.2s}
    .footer-links a:hover{color:#fff;padding-left:4px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.16);margin-top:45px;padding-top:18px;color:#bcaebe;font-size:12px;display:flex;justify-content:space-between;gap:15px}
    @media(max-width:1024px){
      .main-nav a{padding:9px 8px;font-size:14px}
      .download-shell,.phone-layout{gap:30px}
      .footer-grid{grid-template-columns:1.3fr repeat(3,1fr);gap:22px}
    }
    @media(max-width:767px){
      .container{width:min(100% - 32px,var(--container))}
      .site-header{height:70px}
      .header-action{display:none}
      .menu-toggle{display:block}
      .main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:var(--cream);border-bottom:1px solid var(--line);padding:13px 16px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
      .main-nav.open{display:flex}
      .main-nav a{padding:13px 15px}
      .page-intro{padding:55px 0 36px}
      .page-intro h1{font-size:38px}
      .lead{font-size:16px}
      .section{padding:58px 0}
      .download-shell,.feature-grid,.phone-layout{grid-template-columns:1fr}
      .download-panel{padding:28px 23px}
      .download-panel h2{font-size:30px}
      .qr-card{padding:25px 18px;gap:18px}
      .qr-box{width:126px;height:126px}
      .phone-stage{height:350px}
      .phone{transform:scale(.88);transform-origin:bottom center}
      .support-grid{grid-template-columns:1fr}
      .section-head{display:block;margin-bottom:25px}
      .section-head p{margin-top:12px}
      .cta-band{display:block;padding:30px 24px}
      .cta-band .btn-primary{margin-top:22px;width:100%}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block;line-height:2}
      .footer-bottom span{display:block}
    }
    @media(max-width:520px){
      .logo{font-size:17px;gap:8px}
      .logo-mark{width:34px;height:34px}
      .download-actions{display:grid}
      .download-actions a{width:100%}
      .qr-card{display:block;text-align:center}
      .qr-box{margin:0 auto 20px}
      .feature-card.large{min-height:0}
      .footer-grid{grid-template-columns:1fr}
    }