/* roulang page: index */
:root{
  --ink:#202824;
  --ink-soft:#52615b;
  --muted:#7b8781;
  --paper:#f5f4ef;
  --white:#fff;
  --jade:#167b68;
  --jade-dark:#0d604f;
  --mint:#e6f0ec;
  --coral:#d87b5a;
  --line:#dce2dd;
  --dark:#18221f;
  --radius:18px;
  --shadow:0 14px 34px rgba(32,40,36,.07);
  --ease:all .25s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:16px}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(220,226,221,.8);backdrop-filter:blur(12px)}
.navbar{height:76px;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:11px;min-width:245px}
.logo-mark{width:38px;height:38px;border:2px solid var(--jade);border-radius:12px;position:relative;background:var(--mint)}
.logo-mark:before,.logo-mark:after{content:"";position:absolute;background:var(--jade);border-radius:3px}
.logo-mark:before{width:17px;height:3px;left:9px;top:11px;box-shadow:0 7px 0 var(--jade),0 14px 0 var(--jade)}
.logo-mark:after{width:3px;height:22px;right:8px;bottom:7px;transform:rotate(40deg)}
.logo strong{font-size:17px;letter-spacing:-.5px;line-height:1.2}
.logo small{display:block;color:var(--jade);font-size:11px;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
.nav-links a{padding:9px 13px;border-radius:10px;color:var(--ink-soft);font-size:14px;transition:var(--ease)}
.nav-links a:hover,.nav-links a.active{color:var(--jade);background:var(--mint)}
.nav-download{background:var(--jade)!important;color:#fff!important;padding:11px 17px!important}
.nav-download:hover{background:var(--jade-dark)!important;transform:translateY(-1px)}
.menu-toggle{display:none;border:0;background:transparent;font-size:25px;color:var(--ink)}
.hero{padding:88px 0 70px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:72px}
.eyebrow,.section-kicker{color:var(--jade);font-size:13px;font-weight:700;letter-spacing:1.5px;margin-bottom:15px}
.hero h1{font-size:clamp(34px,4.6vw,56px);line-height:1.2;letter-spacing:-2px;max-width:630px}
.hero-copy{font-size:17px;color:var(--ink-soft);max-width:570px;margin:24px 0 30px}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;padding:12px 21px;font-weight:700;font-size:14px;transition:var(--ease)}
.btn-primary{background:var(--jade);color:#fff;box-shadow:0 8px 18px rgba(22,123,104,.18)}
.btn-primary:hover{background:var(--jade-dark);transform:translateY(-2px);box-shadow:0 11px 24px rgba(22,123,104,.25)}
.btn-outline{border-color:var(--line);background:#fff;color:var(--ink)}
.btn-outline:hover{border-color:var(--jade);color:var(--jade);transform:translateY(-2px)}
.hero-visual{min-height:410px;position:relative;display:flex;align-items:center;justify-content:center}
.app-board{width:370px;height:360px;border-radius:26px;background:var(--dark);padding:25px;color:#fff;position:relative;transform:rotate(3deg);box-shadow:25px 25px 0 #dfeae5}
.app-top{display:flex;justify-content:space-between;color:#b7cbc3;font-size:12px}
.app-board h3{font-size:23px;margin:29px 0 18px}
.app-panel{background:#26342f;border-radius:15px;padding:17px;margin-bottom:12px}
.app-panel span{display:block;color:#a7b9b2;font-size:12px}
.app-panel b{display:block;margin-top:7px;font-size:17px}
.app-line{height:8px;background:#3e5b51;border-radius:10px;margin-top:13px}
.app-line i{display:block;width:68%;height:100%;background:var(--jade);border-radius:10px}
.float-note{position:absolute;background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px 18px;box-shadow:var(--shadow);font-size:13px}
.float-note b{display:block;color:var(--ink);font-size:15px}
.note-a{top:35px;left:5px}.note-b{right:-5px;bottom:40px}.note-b b{color:var(--coral)}
.trust-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
.trust-item{display:flex;align-items:center;gap:12px;color:var(--ink-soft);font-size:14px}
.trust-item strong{font-size:12px;color:var(--jade);letter-spacing:1px}
.section{padding:92px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:32px}
.section-head h2{font-size:32px;line-height:1.3;letter-spacing:-1px}
.section-head p{color:var(--muted);max-width:500px}
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.quick-item{background:#fff;border:1px solid var(--line);padding:24px 21px;border-radius:15px;transition:var(--ease)}
.quick-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#acd0c5}
.quick-icon{width:40px;height:40px;border-radius:12px;background:var(--mint);color:var(--jade);display:grid;place-items:center;font-weight:800;margin-bottom:17px}
.quick-item h3{font-size:18px;margin-bottom:5px}.quick-item p{color:var(--muted);font-size:13px}
.info-band{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:28px 0}
.info-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.info-cell{padding:4px 25px;border-right:1px solid var(--line)}.info-cell:first-child{padding-left:0}.info-cell:last-child{border:0}
.info-cell b{font-size:25px;color:var(--jade);display:block}.info-cell span{font-size:14px;color:var(--ink-soft)}
.feature-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:70px;align-items:center}
.feature-copy h2{font-size:34px;line-height:1.3;margin-bottom:17px}.feature-copy p{color:var(--ink-soft);margin-bottom:23px}
.check-list{list-style:none;display:grid;gap:12px}.check-list li{display:flex;gap:10px;align-items:center;font-size:14px}.check-list li:before{content:"✓";color:var(--jade);font-weight:800}
.screen-stack{height:390px;position:relative;background:var(--mint);border-radius:24px;display:flex;justify-content:center;align-items:center}
.phone{width:165px;height:320px;border:7px solid var(--dark);border-radius:26px;background:#fff;padding:17px 12px;box-shadow:var(--shadow)}
.phone.small{position:absolute;width:140px;height:275px;right:14%;bottom:20px;transform:rotate(8deg);opacity:.94}
.phone.left{position:absolute;width:140px;height:275px;left:12%;top:25px;transform:rotate(-7deg);opacity:.9}
.phone-head{height:8px;width:45px;background:var(--line);border-radius:8px;margin:0 auto 22px}
.phone h4{font-size:15px;margin-bottom:15px}.phone-card{height:52px;background:var(--mint);border-radius:10px;margin-bottom:9px;padding:8px;font-size:11px;color:var(--jade)}.phone-card.dark{background:var(--dark);color:#fff}
.download-section{background:var(--dark);color:#fff;border-radius:24px;padding:46px 52px}
.download-grid{display:grid;grid-template-columns:1fr .8fr;gap:40px;align-items:center}
.download-section h2{font-size:32px;line-height:1.35}.download-section p{color:#b6c4bf;margin:15px 0 22px}
.download-meta{display:flex;gap:10px;flex-wrap:wrap}.download-meta span{border:1px solid #40514a;border-radius:20px;padding:5px 11px;font-size:12px;color:#c9d6d1}
.qr-box{background:#fff;color:var(--ink);border-radius:15px;padding:19px;display:flex;align-items:center;gap:18px;max-width:350px;margin-left:auto}
.qr{width:92px;height:92px;background:repeating-linear-gradient(45deg,#202824 0 4px,#fff 4px 8px);border:7px solid #fff;outline:1px solid var(--line)}
.qr-box small{display:block;color:var(--muted);font-size:12px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.step{padding:24px 20px 10px 0;border-right:1px solid var(--line);margin-right:22px}.step:last-child{border:0}
.step-no{color:var(--coral);font-size:13px;font-weight:800;letter-spacing:1px}.step h3{font-size:18px;margin:8px 0}.step p{color:var(--muted);font-size:13px}
.news-section{background:#fff}
.news-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}
.news-feature,.news-list{border:1px solid var(--line);border-radius:16px;background:#fff}
.news-feature{padding:28px}.news-feature .news-cover{height:150px;border-radius:12px;background:linear-gradient(135deg,#dceee7,#eef3ed);margin-bottom:21px;position:relative;overflow:hidden}.news-cover:after{content:"版本信息";position:absolute;right:22px;bottom:20px;background:#fff;padding:9px 14px;border-radius:9px;color:var(--jade);font-size:12px}
.tag{display:inline-block;background:var(--mint);color:var(--jade);font-size:12px;border-radius:20px;padding:4px 10px;margin-bottom:12px}.news-feature h3{font-size:22px;line-height:1.45}.news-feature p{color:var(--muted);font-size:14px;margin:10px 0 17px}
.news-list{padding:5px 25px}.news-row{padding:20px 0;border-bottom:1px solid var(--line)}.news-row:last-child{border:0}.news-row h3{font-size:16px;line-height:1.5}.news-row p{font-size:13px;color:var(--muted);margin:4px 0}.news-meta{font-size:12px;color:var(--muted);display:flex;justify-content:space-between}
.timeline{display:grid;grid-template-columns:190px 1fr;gap:0;border-top:1px solid var(--line)}
.timeline-item{display:contents}.timeline-date{padding:22px 15px 22px 0;color:var(--jade);font-size:13px;border-bottom:1px solid var(--line)}.timeline-content{padding:20px 0 20px 25px;border-bottom:1px solid var(--line);border-left:1px solid var(--line)}.timeline-content h3{font-size:17px}.timeline-content p{font-size:14px;color:var(--muted)}
.tutorial-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.tutorial{background:#ebece7;border-radius:15px;padding:22px}.tutorial b{font-size:27px;color:var(--jade);display:block;margin-bottom:15px}.tutorial h3{font-size:17px}.tutorial p{color:var(--ink-soft);font-size:13px;margin-top:6px}
.security{background:var(--mint)}.security-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.security-card{background:#fff;padding:24px;border-radius:15px}.security-card h3{font-size:17px;margin:11px 0 5px}.security-card p{font-size:13px;color:var(--muted)}
.support-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:18px}.support-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px}.support-card h3{font-size:21px;margin-bottom:10px}.support-card p{color:var(--muted);font-size:14px}.support-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.feedback{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.quote{background:#fff;border:1px solid var(--line);border-radius:15px;padding:22px}.quote p{font-size:14px;color:var(--ink-soft)}.quote strong{display:block;margin-top:17px;font-size:13px;color:var(--jade)}
.faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px}.faq-intro p{color:var(--muted);font-size:14px;margin-top:14px}.faq-list{display:grid;gap:9px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}.faq-item summary{list-style:none;padding:16px 19px;font-weight:700;font-size:15px;cursor:pointer;position:relative;padding-right:45px}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"＋";position:absolute;right:18px;color:var(--jade);font-size:19px}.faq-item[open] summary{background:var(--mint);color:var(--jade)}.faq-item[open] summary:after{content:"−"}.faq-answer{padding:0 19px 17px;color:var(--ink-soft);font-size:14px}
.final-download{margin-bottom:92px}.site-footer{background:var(--dark);color:#fff;padding:62px 0 24px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px;padding-bottom:45px}.footer-brand p{color:#aabbb4;font-size:13px;max-width:280px;margin-top:14px}.footer-title{font-size:14px;margin-bottom:14px}.footer-links{display:grid;gap:8px}.footer-links a{color:#aabbb4;font-size:13px;transition:var(--ease)}.footer-links a:hover{color:#fff;padding-left:3px}.footer-bottom{border-top:1px solid #35433e;padding-top:19px;color:#899993;font-size:12px;display:flex;justify-content:space-between;gap:15px}
@media(max-width:1024px){.hero-grid{gap:35px}.nav-links a{padding:8px 8px}.logo{min-width:215px}.feature-grid,.faq-grid{gap:35px}}
@media(max-width:768px){.container{width:min(100% - 30px,600px)}.navbar{height:68px}.menu-toggle{display:block;margin-left:auto}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;padding:12px 15px;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}.nav-links.open{display:flex}.nav-links a{text-align:center;padding:12px}.nav-download{margin-top:5px}.hero{padding:58px 0 50px}.hero-grid,.feature-grid,.download-grid,.support-grid,.faq-grid{grid-template-columns:1fr}.hero-visual{min-height:350px}.app-board{width:330px}.trust-grid,.quick-grid,.info-grid,.tutorial-grid,.security-grid{grid-template-columns:repeat(2,1fr)}.info-cell{padding:10px 15px}.info-cell:nth-child(2){border-right:0}.info-cell:nth-child(-n+2){border-bottom:1px solid var(--line)}.section{padding:62px 0}.section-head{display:block}.section-head p{margin-top:12px}.screen-stack{margin-top:10px}.download-section{padding:34px 25px}.qr-box{margin:10px 0 0}.news-grid{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr);gap:15px}.step{border-right:0;margin:0;border-bottom:1px solid var(--line);padding-bottom:20px}.timeline{grid-template-columns:100px 1fr}.feedback{grid-template-columns:1fr}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}}
@media(max-width:520px){body{font-size:15px}.logo strong{font-size:14px}.logo small{font-size:10px}.hero h1{font-size:34px;letter-spacing:-1px}.hero-copy{font-size:15px}.hero-visual{min-height:300px}.app-board{width:285px;height:315px;padding:20px}.float-note{padding:10px 12px}.note-a{left:-4px;top:20px}.note-b{right:-3px;bottom:15px}.quick-grid,.trust-grid,.info-grid,.tutorial-grid,.security-grid{grid-template-columns:1fr}.info-cell{border-right:0!important;border-bottom:1px solid var(--line)!important;padding:12px 0}.info-cell:last-child{border:0!important}.section-head h2,.feature-copy h2,.download-section h2{font-size:26px}.screen-stack{height:330px}.phone{width:145px;height:285px}.phone.left{left:2%;width:112px;height:235px}.phone.small{right:2%;width:112px;height:235px}.steps{grid-template-columns:1fr}.timeline{grid-template-columns:1fr}.timeline-date{padding-bottom:0;border-bottom:0}.timeline-content{padding:4px 0 18px;border-left:0}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-brand{grid-column:1/-1}}

/* roulang page: article */
:root{
      --ink:#202824;
      --ink-soft:#52615b;
      --muted:#7b8781;
      --paper:#f5f4ef;
      --white:#fff;
      --jade:#167b68;
      --jade-dark:#0d604f;
      --mint:#e6f0ec;
      --coral:#d87b5a;
      --line:#dce2dd;
      --dark:#18221f;
      --radius:18px;
      --shadow:0 14px 34px rgba(32,40,36,.07);
      --ease:all .25s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:16px}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(22,123,104,.28);outline-offset:3px}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);border-bottom:1px solid rgba(220,226,221,.85);backdrop-filter:blur(12px)}
    .navbar{height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;min-width:245px}
    .logo-mark{width:38px;height:38px;border:2px solid var(--jade);border-radius:12px;position:relative;background:var(--mint)}
    .logo-mark:before,.logo-mark:after{content:"";position:absolute;background:var(--jade);border-radius:3px}
    .logo-mark:before{width:17px;height:3px;left:9px;top:11px;box-shadow:0 7px 0 var(--jade),0 14px 0 var(--jade)}
    .logo-mark:after{width:3px;height:22px;right:8px;bottom:7px;transform:rotate(40deg)}
    .logo strong{font-size:17px;letter-spacing:-.5px;line-height:1.2}
    .logo small{display:block;color:var(--jade);font-size:11px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-links a{padding:9px 13px;border-radius:10px;color:var(--ink-soft);font-size:14px;transition:var(--ease)}
    .nav-links a:hover,.nav-links a.active{color:var(--jade);background:var(--mint)}
    .nav-download{background:var(--jade)!important;color:#fff!important;padding:11px 17px!important}
    .nav-download:hover{background:var(--jade-dark)!important;transform:translateY(-1px)}
    .menu-toggle{display:none;border:0;background:transparent;font-size:25px;color:var(--ink)}
    .article-head{padding:76px 0 52px;background:#fff;border-bottom:1px solid var(--line)}
    .breadcrumbs{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px;margin-bottom:27px}
    .breadcrumbs a{color:var(--jade)}
    .breadcrumbs span{color:#b1bbb5}
    .article-label{display:inline-flex;align-items:center;gap:8px;background:var(--mint);color:var(--jade);border-radius:20px;padding:6px 13px;font-size:13px;font-weight:700;margin-bottom:18px}
    .article-label:before{content:"";width:7px;height:7px;background:var(--jade);border-radius:50%}
    .article-head h1{font-size:clamp(31px,4vw,48px);line-height:1.25;letter-spacing:-1.5px;max-width:880px;margin:0 0 18px}
    .article-summary{max-width:800px;color:var(--ink-soft);font-size:17px;margin:0 0 24px}
    .article-meta{display:flex;flex-wrap:wrap;gap:10px 24px;color:var(--muted);font-size:13px}
    .article-meta span{display:inline-flex;align-items:center;gap:7px}
    .article-meta i{width:6px;height:6px;border-radius:50%;background:var(--coral);display:inline-block}
    .article-layout{display:grid;grid-template-columns:minmax(0,820px) 250px;gap:60px;align-items:start;padding:70px 0 88px}
    .article-content{background:#fff;border:1px solid var(--line);border-radius:20px;padding:42px 48px;box-shadow:0 8px 26px rgba(32,40,36,.035)}
    .article-content h2{font-size:28px;line-height:1.4;margin:34px 0 15px}
    .article-content h3{font-size:20px;line-height:1.45;margin:28px 0 12px}
    .article-content p{color:#46544e;line-height:1.95;margin:0 0 19px}
    .article-content ul,.article-content ol{padding-left:24px;color:#46544e;margin:16px 0 24px}
    .article-content li{padding-left:5px;margin:8px 0}
    .article-content a{color:var(--jade);text-decoration:underline;text-underline-offset:3px}
    .article-content blockquote{margin:27px 0;padding:18px 22px;border-left:4px solid var(--jade);background:var(--mint);border-radius:0 12px 12px 0;color:var(--ink-soft)}
    .article-content img{border-radius:13px;margin:25px 0 8px}
    .article-content table{width:100%;border-collapse:collapse;margin:25px 0;color:var(--ink-soft);font-size:14px}
    .article-content th,.article-content td{border:1px solid var(--line);padding:12px 14px;text-align:left}
    .article-content th{background:var(--mint);color:var(--ink)}
    .article-content .notice{padding:18px 20px;background:#fff6f1;border:1px solid #f1d7ca;border-radius:13px;color:#805443;margin:25px 0}
    .article-side{position:sticky;top:101px}
    .side-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px}
    .side-card h2{font-size:17px;margin:0 0 14px}
    .side-card p{font-size:13px;color:var(--muted);margin:0 0 17px}
    .side-links{display:grid;gap:9px}
    .side-links a{font-size:14px;color:var(--ink-soft);padding:9px 11px;border-radius:9px;background:var(--paper);transition:var(--ease)}
    .side-links a:hover{color:var(--jade);background:var(--mint)}
    .download-card{margin-top:16px;background:var(--dark);color:#fff;border-radius:16px;padding:22px}
    .download-card h3{font-size:18px;margin:0 0 9px}
    .download-card p{color:#b9c7c1;font-size:13px;margin:0 0 17px}
    .download-card .btn{width:100%}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;padding:12px 21px;font-weight:700;font-size:14px;transition:var(--ease)}
    .btn-primary{background:var(--jade);color:#fff;box-shadow:0 8px 18px rgba(22,123,104,.18)}
    .btn-primary:hover{background:var(--jade-dark);color:#fff;transform:translateY(-2px);box-shadow:0 11px 24px rgba(22,123,104,.25)}
    .article-callout{display:flex;align-items:center;justify-content:space-between;gap:24px;background:var(--mint);border:1px solid #c9e1d8;border-radius:16px;padding:23px 26px;margin:38px 0 6px}
    .article-callout h3{font-size:19px;margin:0 0 4px}
    .article-callout p{font-size:13px;margin:0;color:var(--ink-soft)}
    .article-footer{border-top:1px solid var(--line);padding-top:25px;margin-top:38px;display:flex;flex-wrap:wrap;gap:12px 22px;font-size:13px;color:var(--muted)}
    .article-footer a{color:var(--jade)}
    .support-strip{padding:0 0 90px}
    .support-inner{display:flex;align-items:center;justify-content:space-between;gap:25px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 30px}
    .support-inner h2{font-size:21px;margin:0 0 5px}
    .support-inner p{color:var(--muted);font-size:14px;margin:0}
    .site-footer{background:var(--dark);color:#fff;padding:57px 0 23px}
    .footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:36px;padding-bottom:43px}
    .footer-brand p{color:#aebdb6;font-size:13px;max-width:275px;margin-top:17px}
    .footer-title{font-size:15px;margin:4px 0 16px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:#aebdb6;font-size:13px;transition:var(--ease)}
    .footer-links a:hover{color:#fff}
    .footer-bottom{border-top:1px solid #35443e;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#8fa099;font-size:12px}
    @media(max-width:1024px){
      .navbar{gap:14px}.logo{min-width:220px}.nav-links a{padding:8px 8px}
      .article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:30px}
    }
    @media(max-width:768px){
      .container{width:min(100% - 32px,620px)}
      .navbar{height:68px}.logo{min-width:0;flex:1}.logo strong{font-size:15px}
      .menu-toggle{display:block}.nav-links{display:none;position:absolute;left:16px;right:16px;top:74px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.is-open{display:flex}.nav-links a{padding:12px 14px}.nav-download{text-align:center}
      .article-head{padding:51px 0 38px}.article-head h1{font-size:32px}
      .article-layout{display:block;padding:42px 0 62px}.article-side{display:none}
      .article-content{padding:27px 22px;border-radius:16px}.article-content h2{font-size:24px}
      .article-callout{display:block}.article-callout .btn{margin-top:17px}
      .support-strip{padding-bottom:60px}.support-inner{display:block;padding:23px}.support-inner .btn{margin-top:17px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
    }
    @media(max-width:520px){
      .logo small{font-size:10px}.logo-mark{width:34px;height:34px}
      .article-meta{gap:8px 14px}.article-content{padding:23px 17px}
      .article-content table{font-size:12px}.article-content th,.article-content td{padding:9px 8px}
      .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
    }

/* roulang page: category1 */
:root{
      --ink:#202824;--ink-soft:#52615b;--muted:#7b8781;--paper:#f5f4ef;
      --white:#fff;--jade:#167b68;--jade-dark:#0d604f;--mint:#e6f0ec;
      --coral:#d87b5a;--line:#dce2dd;--dark:#18221f;--radius:18px;
      --shadow:0 14px 34px rgba(32,40,36,.07);--ease:all .25s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:16px}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(216,123,90,.45);outline-offset:3px}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);border-bottom:1px solid rgba(220,226,221,.85);backdrop-filter:blur(12px)}
    .navbar{height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;min-width:245px}
    .logo-mark{width:38px;height:38px;border:2px solid var(--jade);border-radius:12px;position:relative;background:var(--mint)}
    .logo-mark:before,.logo-mark:after{content:"";position:absolute;background:var(--jade);border-radius:3px}
    .logo-mark:before{width:17px;height:3px;left:9px;top:11px;box-shadow:0 7px 0 var(--jade),0 14px 0 var(--jade)}
    .logo-mark:after{width:3px;height:22px;right:8px;bottom:7px;transform:rotate(40deg)}
    .logo strong{font-size:17px;letter-spacing:-.5px;line-height:1.2}
    .logo small{display:block;color:var(--jade);font-size:11px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-links a{padding:9px 13px;border-radius:10px;color:var(--ink-soft);font-size:14px;transition:var(--ease)}
    .nav-links a:hover,.nav-links a.active{color:var(--jade);background:var(--mint)}
    .nav-links .nav-download{background:var(--jade)!important;color:#fff!important;padding:11px 17px!important}
    .nav-download:hover{background:var(--jade-dark)!important;transform:translateY(-1px)}
    .menu-toggle{display:none;border:0;background:transparent;font-size:25px;color:var(--ink)}
    .page-head{padding:70px 0 58px;background:#fff;border-bottom:1px solid var(--line)}
    .breadcrumb{font-size:13px;color:var(--muted);margin-bottom:24px}
    .breadcrumb a{color:var(--jade)}
    .head-layout{display:flex;justify-content:space-between;align-items:end;gap:40px}
    .section-kicker{color:var(--jade);font-size:13px;font-weight:700;letter-spacing:1.5px;margin-bottom:12px}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(34px,5vw,52px);line-height:1.2;letter-spacing:-1.8px;margin-bottom:16px}
    .head-copy{max-width:650px;color:var(--ink-soft);font-size:17px;margin:0}
    .head-mark{width:230px;height:135px;border:1px solid var(--line);border-radius:24px;background:var(--mint);position:relative;overflow:hidden}
    .head-mark:before{content:"";position:absolute;width:150px;height:150px;border:18px solid rgba(22,123,104,.12);border-radius:50%;right:-30px;top:-58px}
    .head-mark:after{content:"服务指南";position:absolute;left:23px;bottom:20px;color:var(--jade);font-size:14px;font-weight:700;letter-spacing:2px}
    .section{padding:82px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:30px}
    .section-head h2{font-size:31px;line-height:1.3;letter-spacing:-1px;margin:0}
    .section-head p{max-width:500px;color:var(--muted);margin:0}
    .anchor-strip{display:flex;flex-wrap:wrap;gap:12px}
    .anchor-strip a{background:#fff;border:1px solid var(--line);border-radius:30px;padding:11px 19px;color:var(--ink-soft);font-size:14px;transition:var(--ease)}
    .anchor-strip a:hover{border-color:var(--jade);color:var(--jade);background:var(--mint);transform:translateY(-2px)}
    .guide-feature{display:grid;grid-template-columns:1.05fr .95fr;background:var(--dark);color:#fff;border-radius:22px;overflow:hidden;box-shadow:var(--shadow)}
    .feature-content{padding:42px}
    .feature-content .tag{background:#31564d;color:#d9eee7}
    .tag{display:inline-block;background:var(--mint);color:var(--jade);font-size:12px;border-radius:20px;padding:4px 10px;margin-bottom:14px}
    .feature-content h2{font-size:30px;line-height:1.4;margin-bottom:15px}
    .feature-content p{color:#bdcbc5;max-width:540px;margin-bottom:24px}
    .feature-art{min-height:290px;background:linear-gradient(135deg,#d7ebe3,#8fbbae);position:relative;padding:30px}
    .guide-window{width:75%;height:190px;background:#fff;border-radius:14px;position:absolute;right:34px;top:48px;padding:18px;color:var(--ink);box-shadow:0 18px 30px rgba(24,34,31,.15)}
    .guide-window b{display:block;font-size:18px;margin-bottom:15px}
    .guide-line{height:10px;border-radius:8px;background:var(--mint);margin:12px 0}
    .guide-line.short{width:58%}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;padding:12px 21px;font-weight:700;font-size:14px;transition:var(--ease)}
    .btn-primary{background:var(--jade);color:#fff;box-shadow:0 8px 18px rgba(22,123,104,.18)}
    .btn-primary:hover{background:var(--jade-dark);transform:translateY(-2px)}
    .btn-light{background:#fff;color:var(--ink)}
    .btn-light:hover{color:var(--jade);transform:translateY(-2px)}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line)}
    .step{padding:26px 22px 10px;border-right:1px solid var(--line)}
    .step:last-child{border-right:0}
    .step-no{color:var(--coral);font-size:13px;font-weight:800;letter-spacing:1px}
    .step h3{font-size:19px;margin:12px 0 7px}
    .step p{font-size:14px;color:var(--muted);margin:0}
    .article-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
    .guide-list,.tip-panel{background:#fff;border:1px solid var(--line);border-radius:17px;padding:12px 28px}
    .guide-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:21px 0;border-bottom:1px solid var(--line)}
    .guide-row:last-child{border-bottom:0}
    .guide-row h3{font-size:17px;margin:0 0 4px}
    .guide-row p{font-size:13px;color:var(--muted);margin:0}
    .guide-row time{font-size:12px;color:var(--muted);white-space:nowrap}
    .guide-row .arrow{color:var(--jade);font-size:20px}
    .tip-panel{padding:28px}
    .tip-panel h2{font-size:23px;margin-bottom:20px}
    .tip{display:flex;gap:13px;padding:15px 0;border-bottom:1px solid var(--line)}
    .tip:last-child{border:0}
    .tip-icon{width:32px;height:32px;border-radius:10px;background:var(--mint);color:var(--jade);display:grid;place-items:center;font-weight:700;flex:none}
    .tip h3{font-size:15px;margin:0 0 3px}
    .tip p{font-size:13px;color:var(--muted);margin:0}
    .download-bar{background:var(--mint);border:1px solid #c8ddd5;border-radius:20px;padding:32px 38px;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .download-bar h2{font-size:25px;margin-bottom:8px}
    .download-bar p{color:var(--ink-soft);margin:0}
    .faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:55px}
    .faq-intro p{color:var(--muted)}
    .faq-list details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;padding:17px 20px;transition:var(--ease)}
    .faq-list details[open]{border-color:#acd0c5;background:var(--mint)}
    .faq-list summary{cursor:pointer;font-weight:700;list-style:none;position:relative;padding-right:25px}
    .faq-list summary::-webkit-details-marker{display:none}
    .faq-list summary:after{content:"＋";position:absolute;right:0;color:var(--jade)}
    .faq-list details[open] summary:after{content:"－"}
    .faq-answer{color:var(--ink-soft);font-size:14px;padding-top:10px}
    .support-strip{background:var(--dark);color:#fff;border-radius:20px;padding:35px 40px;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .support-strip h2{font-size:26px;margin-bottom:7px}
    .support-strip p{color:#b8c7c0;margin:0}
    .site-footer{background:var(--dark);color:#fff;padding:62px 0 24px;margin-top:0}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px}
    .footer-brand p{color:#aebdb6;font-size:14px;max-width:260px;margin-top:18px}
    .footer-title{font-size:14px;color:#d7e2dd;margin-bottom:15px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:#aebdb6;font-size:13px;transition:var(--ease)}
    .footer-links a:hover{color:#fff;padding-left:3px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #34443e;margin-top:42px;padding-top:20px;color:#8d9c95;font-size:12px}
    @media(max-width:1024px){
      .nav-links{gap:0}.nav-links a{padding:8px 9px}
      .logo{min-width:220px}.head-mark{width:190px}
    }
    @media(max-width:768px){
      .container{width:min(100% - 30px,620px)}
      .navbar{height:68px}.logo{min-width:0}.logo strong{font-size:15px}
      .menu-toggle{display:block;margin-left:auto}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 15px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
      .nav-links.open{display:flex}.nav-links a{padding:12px 14px}
      .page-head{padding:48px 0 42px}.head-layout{display:block}.head-mark{display:none}
      .section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:10px}
      .guide-feature,.article-layout,.faq-grid{grid-template-columns:1fr}
      .feature-art{min-height:230px}.guide-window{width:78%;right:25px;top:28px}
      .steps{grid-template-columns:1fr 1fr}.step{border-bottom:1px solid var(--line)}
      .download-bar,.support-strip{display:block;padding:27px}.download-bar .btn,.support-strip .btn{margin-top:20px}
      .footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:8px}
    }
    @media(max-width:520px){
      h1{font-size:34px}.guide-feature .feature-content{padding:28px 24px}
      .feature-content h2{font-size:25px}.steps{grid-template-columns:1fr}
      .step{border-right:0}.guide-list{padding:8px 19px}.guide-row{align-items:flex-start}
      .guide-row time{display:none}.guide-row h3{font-size:16px}
      .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
    }

/* roulang page: category2 */
:root{
      --ink:#202824;
      --ink-soft:#52615b;
      --muted:#7b8781;
      --paper:#f5f4ef;
      --white:#fff;
      --jade:#167b68;
      --jade-dark:#0d604f;
      --mint:#e6f0ec;
      --coral:#d87b5a;
      --line:#dce2dd;
      --dark:#18221f;
      --radius:18px;
      --shadow:0 14px 34px rgba(32,40,36,.07);
      --ease:all .25s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(22,123,104,.28);outline-offset:3px}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);border-bottom:1px solid rgba(220,226,221,.85);backdrop-filter:blur(12px)}
    .navbar{height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;min-width:245px}
    .logo-mark{width:38px;height:38px;border:2px solid var(--jade);border-radius:12px;position:relative;background:var(--mint)}
    .logo-mark:before,.logo-mark:after{content:"";position:absolute;background:var(--jade);border-radius:3px}
    .logo-mark:before{width:17px;height:3px;left:9px;top:11px;box-shadow:0 7px 0 var(--jade),0 14px 0 var(--jade)}
    .logo-mark:after{width:3px;height:22px;right:8px;bottom:7px;transform:rotate(40deg)}
    .logo strong{font-size:17px;letter-spacing:-.5px;line-height:1.2}
    .logo small{display:block;color:var(--jade);font-size:11px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-links a{padding:9px 13px;border-radius:10px;color:var(--ink-soft);font-size:14px;transition:var(--ease)}
    .nav-links a:hover,.nav-links a.active{color:var(--jade);background:var(--mint)}
    .nav-download{background:var(--jade)!important;color:#fff!important;padding:11px 17px!important}
    .nav-download:hover{background:var(--jade-dark)!important;transform:translateY(-1px)}
    .menu-toggle{display:none;border:0;background:transparent;font-size:25px;color:var(--ink)}
    .page-head{padding:60px 0 52px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
    .page-head:after{content:"";position:absolute;width:260px;height:120px;right:4%;bottom:-45px;border:1px solid #c6d9d1;border-radius:80px;transform:rotate(-12deg)}
    .crumbs{font-size:13px;color:var(--muted);margin-bottom:20px}
    .crumbs a{color:var(--jade)}
    .page-head h1{font-size:clamp(34px,5vw,52px);letter-spacing:-2px;line-height:1.2;margin:0 0 15px;position:relative;z-index:1}
    .page-head p{color:var(--ink-soft);max-width:680px;margin:0;font-size:17px}
    .section{padding:82px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:30px}
    .section-kicker{color:var(--jade);font-size:13px;font-weight:700;letter-spacing:1.5px;margin-bottom:10px}
    .section h2{font-size:32px;line-height:1.3;letter-spacing:-1px;margin:0}
    .section-head p{max-width:470px;color:var(--muted);margin:0}
    .version-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .version-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;transition:var(--ease)}
    .version-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#acd0c5}
    .version-card.current{border:2px solid var(--jade);padding:25px;background:var(--mint)}
    .version-card h3{font-size:20px;margin:0 0 8px}
    .version-card p{color:var(--muted);font-size:14px;min-height:52px}
    .version-meta{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:13px;font-size:12px;color:var(--ink-soft)}
    .badge{display:inline-block;background:#fff;color:var(--jade);border-radius:20px;padding:4px 10px;font-size:12px;font-weight:700;margin-bottom:13px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;padding:12px 21px;font-weight:700;font-size:14px;transition:var(--ease)}
    .btn-primary{background:var(--jade);color:#fff;box-shadow:0 8px 18px rgba(22,123,104,.18)}
    .btn-primary:hover{background:var(--jade-dark);transform:translateY(-2px)}
    .btn-outline{border-color:var(--line);background:#fff;color:var(--ink)}
    .btn-outline:hover{border-color:var(--jade);color:var(--jade);transform:translateY(-2px)}
    .preview-section{background:#fff}
    .preview-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:72px;align-items:center}
    .preview-copy p{color:var(--ink-soft);margin:17px 0 22px}
    .check-list{list-style:none;padding:0;margin:0;display:grid;gap:11px}
    .check-list li{font-size:14px;display:flex;gap:10px;align-items:center}
    .check-list li:before{content:"✓";color:var(--jade);font-weight:800}
    .device-stage{min-height:360px;background:var(--mint);border-radius:24px;display:flex;align-items:center;justify-content:center;gap:18px;padding:28px;position:relative}
    .device{width:150px;height:285px;background:var(--dark);border:7px solid #293731;border-radius:25px;padding:18px 10px;box-shadow:0 16px 28px rgba(24,34,31,.16);color:#fff}
    .device.main-device{height:325px;width:174px;background:#fff;color:var(--ink);border-color:#d4dfda}
    .device-top{height:8px;width:46px;border-radius:8px;background:#41534c;margin:0 auto 20px}
    .device-title{font-size:13px;font-weight:700;margin-bottom:15px}
    .device-line{height:9px;border-radius:5px;background:#dcebe5;margin:10px 0}
    .device-line.short{width:63%}
    .device-panel{height:70px;border-radius:10px;background:var(--jade);margin:13px 0}
    .device-note{font-size:10px;color:var(--muted);margin-top:14px}
    .download-box{background:var(--dark);border-radius:20px;padding:38px;color:#fff}
    .download-layout{display:grid;grid-template-columns:1fr .8fr;gap:42px;align-items:center}
    .download-box h2{font-size:30px;line-height:1.35;margin:0 0 12px}
    .download-box p{color:#b6c4bf;margin:0 0 20px}
    .download-actions{display:flex;gap:12px;flex-wrap:wrap}
    .download-box .btn-outline{background:transparent;border-color:#53675f;color:#fff}
    .qr-area{display:flex;align-items:center;gap:18px}
    .qr{width:116px;height:116px;background:#fff;border-radius:10px;padding:10px;display:grid;grid-template-columns:repeat(7,1fr);gap:3px}
    .qr i{background:#18332a;display:block}
    .qr i:nth-child(3n){background:var(--jade)}
    .download-details{font-size:13px;color:#c8d5d0}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
    .step{padding:24px 22px 10px;border-right:1px solid var(--line);position:relative}
    .step:last-child{border:0}
    .step-number{color:var(--coral);font-size:13px;font-weight:800;letter-spacing:1px}
    .step h3{font-size:18px;margin:9px 0 5px}
    .step p{font-size:13px;color:var(--muted);margin:0}
    .adapt-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .adapt-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}
    .adapt-icon{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:var(--mint);color:var(--jade);font-weight:800;margin-bottom:15px}
    .adapt-card h3{font-size:18px;margin:0 0 7px}
    .adapt-card p{font-size:14px;color:var(--muted);margin:0}
    .help-section{background:#fff}
    .help-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
    .help-feature,.help-list{border:1px solid var(--line);border-radius:16px;background:#fff}
    .help-feature{padding:30px;background:var(--mint)}
    .help-feature h3{font-size:23px;line-height:1.4;margin:0 0 10px}
    .help-feature p{color:var(--ink-soft);font-size:14px}
    .help-list{padding:8px 25px}
    .help-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}
    .help-row:last-child{border:0}
    .help-row h3{font-size:16px;margin:0}
    .help-row span{font-size:12px;color:var(--muted);white-space:nowrap}
    .faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px}
    .faq-intro p{color:var(--muted);font-size:14px}
    .faq-list{display:grid;gap:10px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:13px;overflow:hidden}
    .faq-question{width:100%;border:0;background:#fff;color:var(--ink);padding:17px 20px;text-align:left;font-weight:700;display:flex;justify-content:space-between;align-items:center}
    .faq-question span{color:var(--jade);font-size:21px;transition:var(--ease)}
    .faq-answer{display:none;padding:0 20px 18px;color:var(--ink-soft);font-size:14px}
    .faq-item.open{border-left:3px solid var(--jade);background:var(--mint)}
    .faq-item.open .faq-question{background:var(--mint)}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span{transform:rotate(45deg)}
    .support-bar{background:#e8efeb;border-radius:20px;padding:34px 40px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .support-bar h2{font-size:25px;margin:0 0 6px}
    .support-bar p{color:var(--ink-soft);margin:0;font-size:14px}
    .site-footer{background:var(--dark);color:#dce7e2;padding:58px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px}
    .footer-brand p{color:#9eafa8;font-size:13px;max-width:260px;margin-top:17px}
    .footer-title{font-size:14px;color:#fff;margin:4px 0 14px}
    .footer-links{display:grid;gap:8px}
    .footer-links a{font-size:13px;color:#aebdb7;transition:var(--ease)}
    .footer-links a:hover{color:#fff;transform:translateX(2px)}
    .site-footer .logo strong{color:#fff}
    .footer-bottom{border-top:1px solid #35443e;margin-top:42px;padding-top:18px;color:#899b94;font-size:12px;display:flex;justify-content:space-between;gap:15px}
    @media(max-width:1024px){.nav-links a{padding:8px 8px}.logo{min-width:210px}.preview-grid,.download-layout{gap:35px}.container{width:min(940px,calc(100% - 36px))}}
    @media(max-width:768px){
      .navbar{height:68px}.menu-toggle{display:block;margin-left:auto}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 20px;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}
      .page-head{padding:44px 0 38px}.section{padding:60px 0}.section-head{display:block}.section-head p{margin-top:12px}.version-grid,.adapt-grid{grid-template-columns:1fr}.preview-grid,.download-layout,.help-grid,.faq-grid{grid-template-columns:1fr;gap:28px}.device-stage{min-height:300px}.device{transform:scale(.86)}.device.main-device{transform:scale(.94)}
      .steps{grid-template-columns:1fr 1fr}.step:nth-child(2){border-right:0}.step{border-bottom:1px solid var(--line)}.support-bar{display:block;padding:28px}.support-bar .btn{margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      .container{width:min(100% - 28px,1180px)}.page-head h1{font-size:34px}.section h2{font-size:27px}.steps{grid-template-columns:1fr}.step{border-right:0}.qr-area{align-items:flex-start;flex-direction:column}.download-box{padding:28px 22px}.device-stage{gap:0;padding:15px}.device:not(.main-device){display:none}.help-row{display:block}.help-row span{display:block;margin-top:4px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}}

/* roulang page: category3 */
:root{
      --ink:#202824;
      --ink-soft:#52615b;
      --muted:#7b8781;
      --paper:#f5f4ef;
      --white:#fff;
      --jade:#167b68;
      --jade-dark:#0d604f;
      --mint:#e6f0ec;
      --coral:#d87b5a;
      --line:#dce2dd;
      --dark:#18221f;
      --radius:18px;
      --shadow:0 14px 34px rgba(32,40,36,.07);
      --ease:all .25s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:16px}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(216,123,90,.45);outline-offset:3px}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(220,226,221,.8);backdrop-filter:blur(12px)}
    .navbar{height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;min-width:245px}
    .logo-mark{width:38px;height:38px;border:2px solid var(--jade);border-radius:12px;position:relative;background:var(--mint)}
    .logo-mark:before,.logo-mark:after{content:"";position:absolute;background:var(--jade);border-radius:3px}
    .logo-mark:before{width:17px;height:3px;left:9px;top:11px;box-shadow:0 7px 0 var(--jade),0 14px 0 var(--jade)}
    .logo-mark:after{width:3px;height:22px;right:8px;bottom:7px;transform:rotate(40deg)}
    .logo strong{font-size:17px;letter-spacing:-.5px;line-height:1.2}
    .logo small{display:block;color:var(--jade);font-size:11px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-links a{padding:9px 13px;border-radius:10px;color:var(--ink-soft);font-size:14px;transition:var(--ease)}
    .nav-links a:hover,.nav-links a.active{color:var(--jade);background:var(--mint)}
    .nav-download{background:var(--jade)!important;color:#fff!important;padding:11px 17px!important}
    .nav-download:hover{background:var(--jade-dark)!important;transform:translateY(-1px)}
    .menu-toggle{display:none;border:0;background:transparent;font-size:25px;color:var(--ink)}
    .page-head{padding:64px 0 54px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
    .page-head:after{content:"";position:absolute;width:280px;height:280px;border:1px solid #c7dbd3;border-radius:50%;right:-60px;top:-130px;opacity:.8}
    .breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:22px}
    .breadcrumb a:hover{color:var(--jade)}
    .page-head h1{font-size:clamp(34px,5vw,52px);line-height:1.2;letter-spacing:-1.8px;margin:0 0 15px;position:relative;z-index:1}
    .page-head p{max-width:680px;color:var(--ink-soft);font-size:17px;margin:0}
    .page-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}
    .badge{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:20px;padding:6px 12px;font-size:12px;color:var(--ink-soft);background:#fff}
    .badge.accent{border-color:#b5d8cd;background:var(--mint);color:var(--jade)}
    .section{padding:82px 0}
    .section.alt{background:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:30px}
    .section-kicker{color:var(--jade);font-size:13px;font-weight:700;letter-spacing:1.5px;margin-bottom:12px}
    .section-head h2{font-size:31px;line-height:1.3;letter-spacing:-1px;margin:0}
    .section-head p{color:var(--muted);max-width:490px;margin:0}
    .feature-layout{display:grid;grid-template-columns:1.12fr .88fr;gap:18px}
    .feature-card,.notice-card,.timeline-card,.update-card,.support-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius)}
    .feature-card{padding:32px;min-height:300px;display:flex;flex-direction:column;justify-content:space-between;transition:var(--ease)}
    .feature-card:hover,.notice-card:hover,.update-card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:#afd0c5}
    .feature-card h3{font-size:27px;line-height:1.4;margin:12px 0 12px;max-width:610px}
    .feature-card p{color:var(--ink-soft);max-width:600px}
    .tag{display:inline-block;background:var(--mint);color:var(--jade);font-size:12px;border-radius:20px;padding:4px 10px}
    .text-link{color:var(--jade);font-weight:700;font-size:14px}
    .text-link:hover{text-decoration:underline;color:var(--jade-dark)}
    .notice-stack{display:grid;gap:14px}
    .notice-card{padding:22px;transition:var(--ease)}
    .notice-card h3{font-size:18px;margin:10px 0 5px}
    .notice-card p{font-size:14px;color:var(--muted);margin:0}
    .icon-box{width:40px;height:40px;border-radius:12px;background:var(--mint);color:var(--jade);display:grid;place-items:center;font-weight:800}
    .timeline{position:relative;max-width:900px;margin:0 auto;padding-left:26px}
    .timeline:before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:2px;background:#c9ddd5}
    .timeline-item{position:relative;padding:0 0 30px 27px}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-item:before{content:"";position:absolute;left:-27px;top:9px;width:12px;height:12px;border:3px solid var(--jade);background:var(--paper);border-radius:50%}
    .timeline-date{font-size:13px;color:var(--jade);font-weight:700;margin-bottom:6px}
    .timeline-card{padding:21px 24px}
    .timeline-card h3{font-size:19px;margin:0 0 7px}
    .timeline-card p{margin:0;color:var(--muted);font-size:14px}
    .news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .news-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:23px;transition:var(--ease)}
    .news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#afd0c5}
    .news-card h3{font-size:18px;line-height:1.5;margin:13px 0 8px}
    .news-card p{color:var(--muted);font-size:14px;line-height:1.7;margin:0 0 17px}
    .news-footer{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:12px;border-top:1px solid var(--line);padding-top:14px}
    .version-board{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:17px;overflow:hidden}
    .version-cell{background:#fff;padding:25px}
    .version-cell strong{display:block;color:var(--jade);font-size:13px;margin-bottom:7px}
    .version-cell b{font-size:24px;display:block;margin-bottom:5px}
    .version-cell span{color:var(--muted);font-size:13px}
    .reminder{background:var(--mint);border-left:4px solid var(--jade);border-radius:0 15px 15px 0;padding:25px 28px;display:flex;gap:18px;align-items:flex-start}
    .reminder h3{font-size:19px;margin:0 0 5px}
    .reminder p{margin:0;color:var(--ink-soft);font-size:14px}
    .follow-box{display:grid;grid-template-columns:1fr auto;align-items:center;gap:25px;background:var(--dark);border-radius:20px;padding:31px 35px;color:#fff}
    .follow-box h2{font-size:25px;margin:0 0 7px}
    .follow-box p{color:#b8c5bf;margin:0;font-size:14px}
    .follow-status{border:1px solid #496057;border-radius:12px;padding:13px 19px;color:#d2dfd9;font-size:14px;white-space:nowrap}
    .support-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .support-card{padding:29px}
    .support-card h3{font-size:21px;margin:0 0 8px}
    .support-card p{color:var(--muted);margin:0 0 20px;font-size:14px}
    .support-card ul{padding-left:20px;margin:0;color:var(--ink-soft);font-size:14px;line-height:2}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;padding:12px 21px;font-weight:700;font-size:14px;transition:var(--ease)}
    .btn-primary{background:var(--jade);color:#fff;box-shadow:0 8px 18px rgba(22,123,104,.18)}
    .btn-primary:hover{background:var(--jade-dark);transform:translateY(-2px);box-shadow:0 11px 24px rgba(22,123,104,.25)}
    .btn-outline{border-color:var(--line);background:#fff;color:var(--ink)}
    .btn-outline:hover{border-color:var(--jade);color:var(--jade);transform:translateY(-2px)}
    .site-footer{background:var(--dark);color:#fff;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.45fr repeat(3,1fr);gap:35px}
    .footer-brand p{color:#aebdb6;font-size:13px;max-width:250px;margin-top:17px}
    .footer-title{font-size:14px;margin:5px 0 15px;color:#fff}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:#aebdb6;font-size:13px;transition:var(--ease)}
    .footer-links a:hover{color:#fff;transform:translateX(2px)}
    .footer-bottom{border-top:1px solid #35443e;margin-top:38px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#8fa099;font-size:12px}
    @media(max-width:1024px){
      .navbar{gap:14px}.logo{min-width:220px}.nav-links a{padding:8px 8px}
      .feature-layout{grid-template-columns:1fr}.news-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(100% - 30px,620px)}
      .navbar{height:68px}.logo{min-width:0;margin-right:auto}.logo strong{font-size:15px}
      .menu-toggle{display:block}.nav-links{display:none;position:absolute;left:15px;right:15px;top:68px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}.nav-links a{padding:12px 14px}
      .page-head{padding:48px 0 42px}.page-head h1{font-size:36px}
      .section{padding:60px 0}.section-head{display:block}.section-head p{margin-top:12px}
      .news-grid,.support-grid{grid-template-columns:1fr}.version-board{grid-template-columns:1fr}
      .follow-box{grid-template-columns:1fr;padding:26px}.follow-status{justify-self:start}
      .footer-grid{grid-template-columns:1fr 1fr;gap:27px}.footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:7px}
    }
    @media(max-width:520px){
      .logo small{font-size:10px}.page-head h1{font-size:31px;letter-spacing:-1px}
      .feature-card{padding:24px}.feature-card h3{font-size:22px}
      .timeline{padding-left:19px}.timeline-item{padding-left:21px}.timeline-item:before{left:-20px}
      .timeline:before{left:4px}.timeline-card{padding:18px}
      .footer-grid{grid-template-columns:1fr}
    }

/* roulang page: category4 */
:root{
      --ink:#202824;
      --ink-soft:#52615b;
      --muted:#7b8781;
      --paper:#f5f4ef;
      --white:#fff;
      --jade:#167b68;
      --jade-dark:#0d604f;
      --mint:#e6f0ec;
      --coral:#d87b5a;
      --line:#dce2dd;
      --dark:#18221f;
      --radius:18px;
      --shadow:0 14px 34px rgba(32,40,36,.07);
      --ease:all .25s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:16px}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(216,123,90,.45);outline-offset:3px}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(220,226,221,.8);backdrop-filter:blur(12px)}
    .navbar{height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;min-width:245px}
    .logo-mark{width:38px;height:38px;border:2px solid var(--jade);border-radius:12px;position:relative;background:var(--mint)}
    .logo-mark:before,.logo-mark:after{content:"";position:absolute;background:var(--jade);border-radius:3px}
    .logo-mark:before{width:17px;height:3px;left:9px;top:11px;box-shadow:0 7px 0 var(--jade),0 14px 0 var(--jade)}
    .logo-mark:after{width:3px;height:22px;right:8px;bottom:7px;transform:rotate(40deg)}
    .logo strong{font-size:17px;letter-spacing:-.5px;line-height:1.2}
    .logo small{display:block;color:var(--jade);font-size:11px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px;margin-left:auto}
    .nav-links a{padding:9px 13px;border-radius:10px;color:var(--ink-soft);font-size:14px;transition:var(--ease)}
    .nav-links a:hover,.nav-links a.active{color:var(--jade);background:var(--mint)}
    .nav-download{background:var(--jade)!important;color:#fff!important;padding:11px 17px!important}
    .nav-download:hover{background:var(--jade-dark)!important;transform:translateY(-1px)}
    .menu-toggle{display:none;border:0;background:transparent;font-size:25px;color:var(--ink)}
    .page-head{padding:68px 0 58px;background:#fff;border-bottom:1px solid var(--line)}
    .crumbs{font-size:13px;color:var(--muted);margin-bottom:25px}
    .crumbs a{color:var(--jade)}
    .page-head-grid{display:grid;grid-template-columns:1fr 310px;gap:50px;align-items:end}
    .eyebrow,.section-kicker{color:var(--jade);font-size:13px;font-weight:700;letter-spacing:1.5px;margin-bottom:13px}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(34px,4.5vw,54px);line-height:1.2;letter-spacing:-2px;margin-bottom:18px}
    .lead{font-size:17px;color:var(--ink-soft);max-width:680px;margin-bottom:0}
    .head-note{background:var(--mint);border-radius:16px;padding:22px;border-left:4px solid var(--jade)}
    .head-note strong{display:block;font-size:14px;color:var(--jade);margin-bottom:6px}
    .head-note span{font-size:14px;color:var(--ink-soft)}
    .section{padding:84px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:30px}
    .section-head h2{font-size:31px;line-height:1.3;letter-spacing:-1px;margin-bottom:0}
    .section-head p{color:var(--muted);max-width:510px;margin-bottom:0}
    .security-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
    .security-card{background:var(--white);border:1px solid var(--line);padding:25px 22px;border-radius:16px;transition:var(--ease)}
    .security-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#acd0c5}
    .icon-box{width:42px;height:42px;border-radius:12px;background:var(--mint);color:var(--jade);display:grid;place-items:center;font-weight:800;font-size:18px}
    .security-card h3{font-size:18px;margin:14px 0 6px}
    .security-card p{font-size:14px;color:var(--muted);margin-bottom:0}
    .steps-section{background:#eef2ed}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
    .step{position:relative;padding:27px 25px 10px 0;margin-right:25px}
    .step:not(:last-child):after{content:"";position:absolute;right:0;top:42px;width:28px;height:1px;background:var(--jade)}
    .step-no{font-size:13px;color:var(--jade);font-weight:800;letter-spacing:1px}
    .step h3{font-size:18px;margin:12px 0 7px}
    .step p{font-size:14px;color:var(--ink-soft);margin:0}
    .verify-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:20px;align-items:stretch}
    .verify-card{background:var(--dark);color:#fff;border-radius:20px;padding:34px}
    .verify-card h2{font-size:29px;line-height:1.35;margin-bottom:15px}
    .verify-card p{color:#c1cec8;margin-bottom:22px}
    .verify-list{display:grid;gap:12px;list-style:none;padding:0;margin:0}
    .verify-list li{display:flex;gap:10px;font-size:14px;color:#e3ece8}
    .verify-list li:before{content:"✓";color:#77c4ad;font-weight:800}
    .notice-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px}
    .notice-card h3{font-size:21px;margin-bottom:15px}
    .notice-card p{color:var(--ink-soft);font-size:14px}
    .notice-line{padding:13px 0;border-bottom:1px solid var(--line);font-size:14px}
    .notice-line:last-child{border-bottom:0}
    .notice-line strong{display:block;color:var(--jade);font-size:12px;margin-bottom:3px}
    .article-layout{display:grid;grid-template-columns:1fr 270px;gap:22px}
    .article-list{background:#fff;border:1px solid var(--line);border-radius:18px;padding:8px 28px}
    .article-item{display:flex;justify-content:space-between;gap:25px;padding:21px 0;border-bottom:1px solid var(--line);transition:var(--ease)}
    .article-item:last-child{border-bottom:0}
    .article-item:hover h3{color:var(--jade)}
    .article-item h3{font-size:17px;margin:0 0 5px;transition:var(--ease)}
    .article-item p{font-size:13px;color:var(--muted);margin:0}
    .article-meta{white-space:nowrap;color:var(--muted);font-size:12px;padding-top:3px}
    .side-card{background:var(--mint);border-radius:18px;padding:26px}
    .side-card h3{font-size:20px;margin-bottom:11px}
    .side-card p{font-size:14px;color:var(--ink-soft)}
    .tag{display:inline-block;background:var(--mint);color:var(--jade);font-size:12px;border-radius:20px;padding:4px 10px;margin-bottom:11px}
    .side-card .tag{background:#fff}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;padding:12px 21px;font-weight:700;font-size:14px;transition:var(--ease)}
    .btn-primary{background:var(--jade);color:#fff;box-shadow:0 8px 18px rgba(22,123,104,.18)}
    .btn-primary:hover{background:var(--jade-dark);transform:translateY(-2px);box-shadow:0 11px 24px rgba(22,123,104,.25)}
    .btn-outline{border-color:var(--line);background:#fff;color:var(--ink)}
    .btn-outline:hover{border-color:var(--jade);color:var(--jade);transform:translateY(-2px)}
    .faq-section{background:#fff}
    .faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}
    .faq-intro h2{font-size:31px;line-height:1.35}
    .faq-intro p{color:var(--muted);font-size:14px}
    .faq-list{display:grid;gap:10px}
    .faq-item{border:1px solid var(--line);border-radius:13px;overflow:hidden;background:#fff}
    .faq-question{width:100%;display:flex;justify-content:space-between;text-align:left;border:0;background:#fff;padding:17px 20px;color:var(--ink);font-weight:700}
    .faq-question span:last-child{color:var(--jade);font-size:20px;line-height:1}
    .faq-answer{display:none;padding:0 20px 18px;color:var(--ink-soft);font-size:14px}
    .faq-item.open{background:var(--mint);border-color:#b8d5cb}
    .faq-item.open .faq-answer{display:block}
    .support-section{padding-top:65px}
    .support-box{background:var(--dark);color:#fff;border-radius:22px;padding:38px 44px;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .support-box h2{font-size:28px;margin-bottom:8px}
    .support-box p{color:#b9c8c2;margin-bottom:0}
    .site-footer{background:var(--dark);color:#fff;padding:60px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding-bottom:42px}
    .footer-brand p{color:#aebdb6;font-size:13px;max-width:260px;margin-top:17px}
    .footer-title{font-size:14px;margin:4px 0 15px;color:#fff}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:#aebdb6;font-size:13px;transition:var(--ease)}
    .footer-links a:hover{color:#fff;transform:translateX(2px)}
    .footer-bottom{border-top:1px solid #37453f;padding-top:19px;display:flex;justify-content:space-between;gap:20px;color:#91a099;font-size:12px}
    @media(max-width:1024px){
      .nav-links a{padding:8px 8px}
      .logo{min-width:210px}
      .security-grid{grid-template-columns:repeat(2,1fr)}
      .page-head-grid{grid-template-columns:1fr 270px}
    }
    @media(max-width:768px){
      .container{width:min(100% - 30px,620px)}
      .navbar{height:68px}
      .menu-toggle{display:block;margin-left:auto}
      .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;padding:12px 15px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.show{display:flex}
      .nav-links a{text-align:center;padding:12px}
      .logo{min-width:0}
      .logo strong{font-size:15px}
      .page-head{padding:45px 0 42px}
      .page-head-grid,.verify-wrap,.article-layout,.faq-grid{grid-template-columns:1fr;gap:22px}
      .section{padding:60px 0}
      .section-head{display:block;margin-bottom:23px}
      .section-head p{margin-top:10px}
      .steps{grid-template-columns:1fr 1fr;gap:12px}
      .step{margin-right:0;padding-right:12px}
      .step:not(:last-child):after{display:none}
      .article-item{display:block}
      .article-meta{margin-top:8px}
      .support-box{display:block;padding:30px 25px}
      .support-box .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:7px}
    }
    @media(max-width:520px){
      .security-grid{grid-template-columns:1fr}
      .steps{grid-template-columns:1fr}
      .verify-card,.notice-card{padding:25px}
      .article-list{padding:5px 20px}
      .section-head h2,.faq-intro h2{font-size:26px}
      .footer-grid{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
    }