/* roulang page: index */
:root{
  --pine:#123f36;--pine-2:#1d5a4d;--pine-3:#e6f0eb;--amber:#d98935;
  --amber-dark:#b96d21;--ink:#1d2926;--muted:#68736f;--paper:#fffdf8;
  --sand:#f3f0e8;--line:#dce3dc;--white:#fff;--radius:16px;
  --shadow:0 14px 34px rgba(20,45,37,.08);--max:1220px;
}
*{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:1.7}
a{color:inherit;text-decoration:none;transition:.25s ease}
img{display:block;max-width:100%}
button,input{font:inherit}
button{cursor:pointer}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.94);border-bottom:1px solid rgba(220,227,220,.85);backdrop-filter:blur(14px)}
.navbar{height:76px;display:flex;align-items:center;gap:30px}
.logo{display:flex;align-items:center;gap:11px;min-width:220px}
.logo-mark{width:38px;height:38px;border:2px solid var(--pine);border-radius:10px 10px 10px 3px;display:grid;place-items:center;color:var(--pine);font-weight:800;font-size:19px;transform:rotate(-6deg)}
.logo-text{font-size:18px;font-weight:800;letter-spacing:.02em;line-height:1.15}
.logo-text small{display:block;color:var(--pine-2);font-size:10px;letter-spacing:.18em;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:4px;flex:1}
.nav-links a{position:relative;padding:25px 13px;color:#53605c;font-size:14px}
.nav-links a:hover,.nav-links a.active{color:var(--pine);font-weight:700}
.nav-links a.active:after{content:"";position:absolute;left:13px;right:13px;bottom:16px;height:3px;border-radius:3px;background:var(--amber)}
.nav-action,.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:9px;padding:11px 19px;font-weight:700;transition:.25s ease}
.nav-action,.btn-primary{background:var(--amber);color:#fff}
.nav-action:hover,.btn-primary:hover{background:var(--amber-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(185,109,33,.2)}
.btn-secondary{border:1px solid var(--pine-2);color:var(--pine);background:transparent}
.btn-secondary:hover{background:var(--pine);color:#fff;transform:translateY(-2px)}
button:focus,a:focus,input:focus{outline:3px solid rgba(217,137,53,.35);outline-offset:3px}
.menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:7px 10px;color:var(--pine)}
.hero{padding:82px 0 76px;background:var(--sand);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:70px}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--pine-2);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:25px;height:2px;background:var(--amber)}
.hero h1{font-size:clamp(35px,5vw,64px);line-height:1.15;letter-spacing:-.04em;margin:19px 0 22px;color:var(--pine)}
.hero h1 em{font-style:normal;color:var(--amber-dark)}
.hero-lead{max-width:600px;color:var(--muted);font-size:17px}
.hero-actions{display:flex;gap:12px;margin-top:31px;flex-wrap:wrap}
.hero-art{position:relative;min-height:355px}
.art-panel{position:absolute;background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:20px;padding:22px}
.art-main{width:80%;right:0;top:28px;height:280px}
.art-side{width:43%;left:0;bottom:0;background:var(--pine);color:#fff}
.art-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:15px}
.art-title{font-weight:800;color:var(--pine)}
.art-dot{width:9px;height:9px;background:var(--amber);border-radius:50%;box-shadow:18px 0 #b9d1c6,36px 0 #dce3dc}
.art-lines{margin-top:25px;display:grid;gap:13px}
.art-line{height:13px;border-radius:20px;background:#e8efea}
.art-line:nth-child(1){width:78%;background:#c8ded3}.art-line:nth-child(2){width:92%}.art-line:nth-child(3){width:58%}
.art-stat{font-size:32px;font-weight:800;margin:6px 0}.art-side p{font-size:13px;color:#c9ddd5}
.section{padding:86px 0}.section.alt{background:#f7f5ef}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:32px}
.section h2{font-size:32px;line-height:1.25;color:var(--pine);letter-spacing:-.025em}
.section-intro{color:var(--muted);max-width:560px;margin-top:9px}
.text-link{color:var(--pine-2);font-weight:700;border-bottom:1px solid #adc8bb;padding-bottom:2px}
.text-link:hover{color:var(--amber-dark);border-color:var(--amber)}
.quick-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.quick-item{padding:22px 18px;background:#fff;border:1px solid var(--line);border-radius:13px}
.quick-item:hover{border-color:#9bbcaf;transform:translateY(-4px);box-shadow:var(--shadow)}
.icon{width:38px;height:38px;border-radius:10px;background:var(--pine-3);display:grid;place-items:center;color:var(--pine);font-weight:800;margin-bottom:18px}
.quick-item h3{font-size:16px;margin-bottom:6px}.quick-item p{font-size:13px;color:var(--muted);line-height:1.6}
.trust-strip{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:16px;background:#fff;overflow:hidden}
.trust-item{padding:25px 26px;border-right:1px solid var(--line)}.trust-item:last-child{border:0}
.trust-item strong{display:block;color:var(--pine);font-size:16px;margin-bottom:4px}.trust-item span{color:var(--muted);font-size:13px}
.news-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:22px}
.news-feature,.news-list{background:#fff;border:1px solid var(--line);border-radius:16px}
.news-feature{padding:31px;display:flex;flex-direction:column;min-height:285px}
.news-feature h3{font-size:25px;color:var(--pine);margin:15px 0 10px;line-height:1.4}
.news-feature p{color:var(--muted);font-size:14px}.news-meta{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:12px;margin-top:auto}
.badge{display:inline-block;background:var(--pine-3);color:var(--pine-2);border-radius:30px;padding:4px 10px;font-size:12px;font-weight:700}
.news-list{padding:8px 24px}.news-row{display:block;padding:19px 0;border-bottom:1px solid var(--line)}.news-row:last-child{border:0}
.news-row:hover .news-row-title{color:var(--amber-dark)}.news-row-title{font-weight:700;color:var(--pine);margin:6px 0 3px}.news-row p{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.date{font-size:12px;color:#8a9690}
.empty-state{padding:55px 20px;text-align:center;color:var(--muted)}
.download-wrap{display:grid;grid-template-columns:1fr .9fr;gap:35px;align-items:center}
.download-box{background:var(--pine);color:#fff;border-radius:20px;padding:38px}
.download-box h2{color:#fff}.download-box p{color:#c9ddd5;margin:15px 0 24px}.version{display:flex;gap:22px;flex-wrap:wrap;margin-bottom:25px}.version span{font-size:13px;color:#dbeae3}.version b{display:block;color:#fff;font-size:16px}
.device-card{min-height:285px;background:#e8f0eb;border-radius:20px;padding:30px;display:flex;align-items:center;gap:25px}
.device{width:150px;height:250px;border:7px solid var(--pine);border-radius:24px;background:#fff;padding:24px 13px;box-shadow:10px 12px 0 rgba(18,63,54,.12)}
.device-bar{height:8px;width:60%;background:var(--amber);border-radius:4px;margin-bottom:20px}.device-block{height:43px;background:var(--pine-3);border-radius:8px;margin:10px 0}
.device-card h3{color:var(--pine);font-size:22px}.device-card p{color:var(--muted);font-size:14px;margin-top:8px}
.split{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:center}.split-copy p{color:var(--muted);margin:15px 0 22px}
.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}.feature-list li{list-style:none;background:#fff;border:1px solid var(--line);padding:17px;border-radius:12px;color:var(--pine);font-weight:700}.feature-list li small{display:block;color:var(--muted);font-weight:400;margin-top:3px}
.timeline{border-left:2px solid #c5d8ce;margin-left:9px;padding-left:28px;display:grid;gap:24px}.timeline-item{position:relative}.timeline-item:before{content:"";position:absolute;width:10px;height:10px;border-radius:50%;background:var(--amber);left:-34px;top:10px}.timeline-item time{font-size:12px;color:var(--amber-dark);font-weight:800}.timeline-item h3{color:var(--pine);font-size:17px}.timeline-item p{font-size:14px;color:var(--muted)}
.editorial{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}.editorial-card{min-height:210px;border-radius:16px;padding:28px;display:flex;flex-direction:column;justify-content:end;border:1px solid var(--line);background:#fff}.editorial-card.large{background:var(--pine);color:#fff;min-height:260px}.editorial-card.large h3{color:#fff}.editorial-card h3{color:var(--pine);font-size:22px;margin:9px 0}.editorial-card p{color:var(--muted);font-size:14px}.editorial-card.large p{color:#c9ddd5}.guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.step{padding:23px;background:#fff;border:1px solid var(--line);border-radius:14px}.step-num{font-size:28px;font-weight:800;color:var(--amber)}.step h3{font-size:17px;color:var(--pine);margin:8px 0}.step p{font-size:13px;color:var(--muted)}
.safety{display:grid;grid-template-columns:1fr 1fr;gap:20px}.safety-card{padding:29px;border-radius:16px;border:1px solid var(--line);background:#fff}.safety-card h3{color:var(--pine);margin-bottom:12px}.safety-card ul{padding-left:20px;color:var(--muted);font-size:14px}.support-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.support-item{padding:20px;border-bottom:3px solid var(--pine-3);background:#fff}.support-item h3{font-size:16px;color:var(--pine)}.support-item p{font-size:13px;color:var(--muted);margin-top:6px}
.faq{max-width:880px;margin:auto}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;background:none;border:0;text-align:left;padding:20px 4px;color:var(--pine);font-weight:800;display:flex;justify-content:space-between}.faq-question span:last-child{color:var(--amber);font-size:22px}.faq-answer{display:none;padding:0 30px 20px 4px;color:var(--muted);font-size:14px}.faq-item.open .faq-answer{display:block}
.notice{background:#eef3ed;border:1px solid #d4e1d7;border-radius:12px;padding:19px 22px;color:#52645c;font-size:13px}
.final-cta{background:var(--pine);color:#fff;padding:58px 0}.final-flex{display:flex;justify-content:space-between;align-items:center;gap:25px}.final-cta h2{color:#fff;font-size:31px}.final-cta p{color:#c9ddd5;margin-top:7px}
.site-footer{background:#0e302a;color:#c9ddd5;padding:48px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}.footer-brand{font-size:19px;font-weight:800;color:#fff}.footer-brand small{display:block;font-size:10px;letter-spacing:.16em;color:#9fc4b5}.footer-grid h3{font-size:14px;color:#fff;margin-bottom:14px}.footer-grid a{display:block;font-size:13px;margin:7px 0;color:#b4cec3}.footer-grid a:hover{color:#f0ad5b}.footer-note{font-size:12px;color:#89aa9d;max-width:320px;margin-top:13px}.copyright{border-top:1px solid rgba(201,221,213,.15);margin-top:35px;padding-top:19px;font-size:12px;color:#89aa9d;display:flex;justify-content:space-between;gap:10px}
@media(max-width:1024px){.nav-links a{padding-left:8px;padding-right:8px}.quick-grid{grid-template-columns:repeat(3,1fr)}.support-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.container{width:min(100% - 32px,620px)}.navbar{height:66px}.logo{min-width:0}.logo-text{font-size:15px}.nav-action{display:none}.menu-toggle{display:block;margin-left:auto}.nav-links{position:absolute;display:none;top:66px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:12px 10px}.nav-links a.active:after{left:10px;right:auto;width:28px;bottom:5px}.hero{padding:58px 0}.hero-grid,.news-layout,.download-wrap,.split,.editorial,.safety{grid-template-columns:1fr;gap:25px}.hero-art{min-height:310px}.section{padding:60px 0}.section-head{display:block}.section-head .text-link{display:inline-block;margin-top:15px}.trust-strip{grid-template-columns:1fr 1fr}.trust-item{border-bottom:1px solid var(--line)}.trust-item:nth-child(2){border-right:0}.quick-grid,.guide-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.final-flex{display:block}.final-flex .btn{margin-top:22px}}
@media(max-width:520px){.hero h1{font-size:35px}.hero-lead{font-size:15px}.hero-actions .btn{width:100%}.hero-art{transform:scale(.9);transform-origin:center}.trust-strip,.quick-grid,.guide-grid,.support-grid{grid-template-columns:1fr}.trust-item{border-right:0}.device-card{display:block}.device{margin:0 auto 22px}.download-box{padding:27px}.section h2{font-size:27px}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-top:7px}}

/* roulang page: article */
:root{
      --pine:#123f36;
      --pine-2:#1d5a4d;
      --pine-3:#e6f0eb;
      --amber:#d98935;
      --amber-dark:#b96d21;
      --ink:#1d2926;
      --muted:#68736f;
      --paper:#fffdf8;
      --sand:#f3f0e8;
      --white:#fff;
      --line:#dce3dc;
      --radius:16px;
      --shadow:0 14px 34px rgba(20,45,37,.08);
      --max:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:var(--paper);
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      line-height:1.7;
    }
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button{cursor:pointer}
    a:focus,button:focus,input:focus{outline:3px solid rgba(217,137,53,.35);outline-offset:3px}
    .container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:20;
      background:rgba(255,253,248,.95);
      border-bottom:1px solid rgba(220,227,220,.9);
      backdrop-filter:blur(14px);
    }
    .navbar{height:76px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:11px;min-width:220px}
    .logo-mark{
      width:38px;height:38px;border:2px solid var(--pine);
      border-radius:10px 10px 10px 3px;display:grid;place-items:center;
      color:var(--pine);font-size:19px;font-weight:800;transform:rotate(-6deg);
    }
    .logo-text{font-size:18px;font-weight:800;letter-spacing:.02em;line-height:1.15}
    .logo-text small{display:block;color:var(--pine-2);font-size:10px;letter-spacing:.18em;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:4px;flex:1}
    .nav-links a{position:relative;padding:25px 13px;color:#53605c;font-size:14px}
    .nav-links a:hover,.nav-links a.active{color:var(--pine);font-weight:700}
    .nav-links a.active:after{
      content:"";position:absolute;left:13px;right:13px;bottom:16px;
      height:3px;border-radius:3px;background:var(--amber)
    }
    .nav-action,.btn{
      display:inline-flex;align-items:center;justify-content:center;
      border:0;border-radius:9px;padding:11px 19px;font-weight:700;transition:.25s ease
    }
    .nav-action,.btn-primary{background:var(--amber);color:#fff}
    .nav-action:hover,.btn-primary:hover{
      background:var(--amber-dark);color:#fff;transform:translateY(-2px);
      box-shadow:0 8px 18px rgba(185,109,33,.2)
    }
    .btn-secondary{border:1px solid var(--pine-2);color:var(--pine);background:transparent}
    .btn-secondary:hover{background:var(--pine);color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:7px 10px;color:var(--pine)}
    .article-hero{padding:76px 0 62px;background:var(--sand);border-bottom:1px solid var(--line)}
    .breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:28px}
    .breadcrumb a{color:var(--pine-2)}
    .breadcrumb a:hover{color:var(--amber-dark)}
    .breadcrumb .slash{color:#a3afa8}
    .article-heading{max-width:900px}
    .eyebrow,.section-kicker{
      display:inline-flex;align-items:center;gap:8px;color:var(--pine-2);
      font-size:13px;font-weight:800;letter-spacing:.08em
    }
    .eyebrow:before,.section-kicker:before{content:"";width:25px;height:2px;background:var(--amber)}
    .article-heading h1{
      color:var(--pine);font-size:clamp(32px,5vw,58px);
      line-height:1.22;letter-spacing:-.04em;margin:18px 0 20px
    }
    .article-summary{max-width:790px;color:var(--muted);font-size:17px;margin:0}
    .article-meta{
      display:flex;flex-wrap:wrap;gap:12px 22px;align-items:center;
      margin-top:27px;color:var(--muted);font-size:13px
    }
    .badge{
      display:inline-block;background:var(--pine-3);color:var(--pine-2);
      border-radius:30px;padding:4px 11px;font-size:12px;font-weight:700
    }
    .reading-layout{
      display:grid;grid-template-columns:minmax(0,820px) 280px;
      gap:58px;align-items:start;padding:72px 0 86px
    }
    .article-content{
      background:#fff;border:1px solid var(--line);border-radius:18px;
      padding:clamp(25px,4vw, fiftypx);box-shadow:0 8px 24px rgba(20,45,37,.04)
    }
    .article-content h2{
      color:var(--pine);font-size:28px;line-height:1.35;
      margin:34px 0 16px;padding-left:16px;border-left:4px solid var(--amber)
    }
    .article-content h3{color:var(--pine-2);font-size:21px;margin:28px 0 12px}
    .article-content p{font-size:16px;line-height:1.95;margin:0 0 20px;color:#394640}
    .article-content ul,.article-content ol{padding-left:25px;margin:16px 0 24px;color:#394640}
    .article-content li{padding:5px 0;line-height:1.85}
    .article-content blockquote{
      margin:28px 0;padding:20px 23px;background:var(--pine-3);
      border-left:4px solid var(--pine-2);color:var(--pine);border-radius:0 10px 10px 0
    }
    .article-content table{width:100%;border-collapse:collapse;margin:25px 0;display:block;overflow-x:auto}
    .article-content th,.article-content td{min-width:140px;border:1px solid var(--line);padding:11px 14px;text-align:left}
    .article-content th{background:var(--pine-3);color:var(--pine)}
    .article-content img{border-radius:12px;margin:25px auto}
    .article-content hr{border:0;border-top:1px solid var(--line);margin:34px 0}
    .article-notice{
      margin-top:30px;padding:20px 22px;border-radius:12px;
      background:#fff8ed;border:1px solid #f0d6ae;color:#765528;font-size:14px
    }
    .article-sidebar{position:sticky;top:104px}
    .side-card{
      background:#fff;border:1px solid var(--line);border-radius:15px;
      padding:24px;margin-bottom:16px
    }
    .side-card h2{font-size:18px;color:var(--pine);margin:0 0 13px}
    .side-card p{font-size:14px;color:var(--muted);margin:0}
    .side-list{list-style:none;padding:0;margin:0}
    .side-list li{border-bottom:1px solid var(--line);padding:10px 0}
    .side-list li:last-child{border:0}
    .side-list a{font-size:14px;color:var(--pine-2)}
    .side-list a:hover{color:var(--amber-dark)}
    .support-section{padding:70px 0;background:#f7f5ef;border-top:1px solid var(--line)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
    .section h2{font-size:30px;line-height:1.3;color:var(--pine);margin:10px 0 0}
    .section-intro{color:var(--muted);max-width:560px;margin:8px 0 0}
    .support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .support-card{
      background:#fff;border:1px solid var(--line);border-radius:14px;
      padding:23px;min-height:150px;transition:.25s ease
    }
    .support-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#a7c1b5}
    .support-card h3{font-size:18px;color:var(--pine);margin:0 0 7px}
    .support-card p{font-size:14px;color:var(--muted);margin:0 0 14px}
    .text-link{color:var(--pine-2);font-weight:700;border-bottom:1px solid #adc8bb;padding-bottom:2px}
    .text-link:hover{color:var(--amber-dark);border-color:var(--amber)}
    .empty-state{text-align:center;padding:70px 20px;color:var(--muted)}
    .empty-state strong{display:block;color:var(--pine);font-size:24px;margin-bottom:10px}
    .site-footer{background:var(--pine);color:#dcebe4;padding:55px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{font-size:20px;font-weight:800;color:#fff}
    .footer-brand small{font-size:10px;letter-spacing:.18em;color:#b9d5c8;margin-left:7px}
    .footer-note{font-size:13px;line-height:1.8;color:#b9cec5;max-width:310px;margin-top:13px}
    .footer-grid h3{font-size:14px;color:#fff;margin:2px 0 13px}
    .footer-grid a{display:block;color:#b9cec5;font-size:13px;margin:8px 0}
    .footer-grid a:hover{color:#fff;padding-left:4px}
    .copyright{
      border-top:1px solid rgba(220,235,228,.18);margin-top:38px;padding-top:17px;
      display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;
      color:#9eb9ad;font-size:12px
    }
    @media(max-width:1024px){
      .navbar{gap:15px}.logo{min-width:190px}.nav-links a{padding-left:8px;padding-right:8px}
      .reading-layout{grid-template-columns:minmax(0,1fr) 245px;gap:30px}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .navbar{height:68px}.logo{min-width:0;flex:1}.logo-text{font-size:16px}
      .menu-toggle{display:block}.nav-action{padding:9px 12px;font-size:13px}
      .nav-links{
        display:none;position:absolute;left:16px;right:16px;top:76px;
        flex-direction:column;align-items:stretch;gap:0;background:#fff;
        border:1px solid var(--line);border-radius:13px;padding:8px;
        box-shadow:var(--shadow)
      }
      .nav-links.open{display:flex}
      .nav-links a{padding:12px 14px;border-radius:8px}
      .nav-links a.active:after{display:none}
      .article-hero{padding:50px 0 45px}
      .reading-layout{display:block;padding:45px 0 58px}
      .article-sidebar{position:static;margin-top:24px}
      .support-grid{grid-template-columns:1fr 1fr}
      .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
      .footer-grid>div:last-child{grid-column:2}
    }
    @media(max-width:520px){
      .logo-mark{width:34px;height:34px;font-size:17px}.logo-text small{font-size:8px}
      .nav-action{display:none}.article-heading h1{font-size:32px}
      .article-summary{font-size:15px}.article-content{padding:22px 18px}
      .article-content h2{font-size:24px}.article-content p{font-size:15px}
      .support-grid{grid-template-columns:1fr}.section-head{display:block}
      .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
      .footer-grid>div:first-child{grid-column:1/-1}.footer-grid>div:last-child{grid-column:auto}
      .copyright{display:block}.copyright span{display:block;margin-top:5px}
    }

/* roulang page: category1 */
:root{
      --pine:#123f36;--pine-2:#1d5a4d;--pine-3:#e6f0eb;--amber:#d98935;
      --amber-dark:#b96d21;--ink:#1d2926;--muted:#68736f;--paper:#fffdf8;
      --sand:#f3f0e8;--line:#dce3dc;--white:#fff;--radius:16px;
      --shadow:0 14px 34px rgba(20,45,37,.08);--max:1220px
    }
    *{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:1.7}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.95);border-bottom:1px solid rgba(220,227,220,.85);backdrop-filter:blur(14px)}
    .navbar{height:76px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:11px;min-width:220px}
    .logo-mark{width:38px;height:38px;border:2px solid var(--pine);border-radius:10px 10px 10px 3px;display:grid;place-items:center;color:var(--pine);font-weight:800;font-size:19px;transform:rotate(-6deg)}
    .logo-text{font-size:18px;font-weight:800;letter-spacing:.02em;line-height:1.15}
    .logo-text small{display:block;color:var(--pine-2);font-size:10px;letter-spacing:.18em;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:4px;flex:1}
    .nav-links a{position:relative;padding:25px 13px;color:#53605c;font-size:14px}
    .nav-links a:hover,.nav-links a.active{color:var(--pine);font-weight:700}
    .nav-links a.active:after{content:"";position:absolute;left:13px;right:13px;bottom:16px;height:3px;border-radius:3px;background:var(--amber)}
    .nav-action,.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:9px;padding:11px 19px;font-weight:700;transition:.25s ease}
    .nav-action,.btn-primary{background:var(--amber);color:#fff}
    .nav-action:hover,.btn-primary:hover{background:var(--amber-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(185,109,33,.2)}
    .btn-secondary{border:1px solid var(--pine-2);color:var(--pine);background:transparent}
    .btn-secondary:hover{background:var(--pine);color:#fff;transform:translateY(-2px)}
    button:focus,a:focus{outline:3px solid rgba(217,137,53,.35);outline-offset:3px}
    .menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:7px 10px;color:var(--pine)}
    .page-hero{padding:72px 0 66px;background:var(--sand);border-bottom:1px solid var(--line)}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--pine-2);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before,.section-kicker:before{content:"";width:25px;height:2px;background:var(--amber)}
    .page-hero h1{font-size:clamp(36px,5vw,60px);line-height:1.15;letter-spacing:-.04em;color:var(--pine);margin:18px 0 18px}
    .page-hero p{max-width:700px;color:var(--muted);font-size:17px;margin:0}
    .crumbs{display:flex;gap:10px;color:var(--muted);font-size:13px;margin-top:28px}
    .crumbs span{color:#9b6c35}
    .section{padding:78px 0}
    .section.alt{background:#f7f5ef}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
    .section h2{font-size:31px;line-height:1.25;color:var(--pine);letter-spacing:-.025em;margin:8px 0}
    .section-intro{color:var(--muted);max-width:610px;margin:0}
    .topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .topic-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:23px 20px;min-height:150px}
    .topic-card:hover{border-color:#9bbcaf;transform:translateY(-4px);box-shadow:var(--shadow)}
    .topic-no{font-size:13px;color:var(--amber-dark);font-weight:800}
    .topic-card h3{color:var(--pine);font-size:18px;margin:10px 0 5px}
    .topic-card p{color:var(--muted);font-size:13px;margin:0}
    .news-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:20px}
    .feature-news,.news-panel{background:#fff;border:1px solid var(--line);border-radius:16px}
    .feature-news{padding:34px;min-height:310px;display:flex;flex-direction:column}
    .badge{display:inline-block;width:max-content;background:var(--pine-3);color:var(--pine-2);border-radius:30px;padding:4px 11px;font-size:12px;font-weight:700}
    .feature-news h3{font-size:26px;line-height:1.4;color:var(--pine);margin:18px 0 12px}
    .feature-news p{color:var(--muted);font-size:15px;max-width:620px}
    .news-meta{display:flex;gap:14px;color:var(--muted);font-size:12px;margin-top:auto;padding-top:22px}
    .news-panel{padding:8px 25px}
    .news-row{padding:20px 0;border-bottom:1px solid var(--line)}
    .news-row:last-child{border:0}
    .news-row:hover h4{color:var(--amber-dark)}
    .news-row h4{font-size:16px;line-height:1.5;color:var(--pine);margin:7px 0 3px}
    .news-row p{font-size:13px;color:var(--muted);margin:0}
    .link-more{display:inline-block;color:var(--pine-2);font-weight:700;border-bottom:1px solid #adc8bb;padding-bottom:2px;margin-top:24px}
    .link-more:hover{color:var(--amber-dark);border-color:var(--amber)}
    .notice-strip{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);background:#fff;border-radius:16px;overflow:hidden}
    .notice-item{padding:26px;border-right:1px solid var(--line)}
    .notice-item:last-child{border:0}
    .notice-item strong{display:block;color:var(--pine);font-size:17px;margin-bottom:7px}
    .notice-item p{color:var(--muted);font-size:14px;margin:0}
    .timeline{border-left:2px solid #c8d9d0;padding-left:30px;max-width:820px}
    .timeline-item{position:relative;margin-bottom:26px}
    .timeline-item:last-child{margin-bottom:0}
    .timeline-item:before{content:"";position:absolute;width:10px;height:10px;border-radius:50%;background:var(--amber);left:-36px;top:10px}
    .timeline-item time{font-size:12px;color:var(--amber-dark);font-weight:800}
    .timeline-item h3{color:var(--pine);font-size:18px;margin:5px 0}
    .timeline-item p{color:var(--muted);font-size:14px;margin:0}
    .guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .guide-card{padding:25px;background:#fff;border:1px solid var(--line);border-radius:13px}
    .guide-card h3{color:var(--pine);font-size:17px;margin:0 0 8px}
    .guide-card p{color:var(--muted);font-size:14px;margin:0}
    .faq{max-width:900px}
    details{border-bottom:1px solid var(--line);padding:18px 0}
    summary{cursor:pointer;color:var(--pine);font-weight:700;padding-right:25px}
    details p{color:var(--muted);font-size:14px;margin:12px 0 0}
    .cta{background:var(--pine);color:#fff;border-radius:18px;padding:42px 48px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta h2{color:#fff;margin:0 0 8px;font-size:28px}
    .cta p{color:#c9ddd5;margin:0}
    .site-footer{background:#102f29;color:#d6e4de;padding:54px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{font-size:20px;font-weight:800;color:#fff}
    .footer-brand small{font-size:10px;letter-spacing:.18em;color:#a9c7bb;margin-left:6px}
    .footer-note{color:#aac1b8;font-size:13px;max-width:310px;margin-top:12px}
    .footer-grid h3{font-size:15px;color:#fff;margin:0 0 12px}
    .footer-grid a{display:block;color:#aac1b8;font-size:13px;margin:7px 0}
    .footer-grid a:hover{color:#f0b36b}
    .copyright{border-top:1px solid rgba(214,228,222,.16);margin-top:38px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#91ada3;font-size:12px}
    @media(max-width:1024px){
      .navbar{gap:14px}.logo{min-width:190px}.nav-links a{padding-left:8px;padding-right:8px}
      .nav-links a.active:after{left:8px;right:8px}.topic-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .navbar{height:68px;justify-content:space-between}.menu-toggle{display:block}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:74px;background:#fffdf8;border:1px solid var(--line);border-radius:12px;padding:8px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}.nav-links a{padding:12px 14px}.nav-links a.active:after{display:none}
      .nav-action{padding:9px 12px;font-size:13px}.logo-text{font-size:16px}.logo-mark{width:34px;height:34px}
      .page-hero{padding:52px 0}.news-layout,.notice-strip{grid-template-columns:1fr}.notice-item{border-right:0;border-bottom:1px solid var(--line)}.notice-item:last-child{border-bottom:0}
      .guide-grid{grid-template-columns:1fr 1fr}.section{padding:60px 0}.section-head{display:block}.section-head .link-more{margin-top:12px}
      .cta{display:block;padding:32px 25px}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:6px}
    }
    @media(max-width:520px){
      .topic-grid,.guide-grid{grid-template-columns:1fr}.page-hero h1{font-size:36px}.feature-news{padding:25px}.feature-news h3{font-size:22px}.section h2{font-size:27px}
      .footer-grid{grid-template-columns:1fr}.logo{min-width:0}.logo-text{max-width:155px}.logo-text small{font-size:9px}
    }

/* roulang page: category2 */
:root{
      --pine:#123f36;--pine-2:#1d5a4d;--pine-3:#e6f0eb;--amber:#d98935;
      --amber-dark:#b96d21;--ink:#1d2926;--muted:#68736f;--paper:#fffdf8;
      --sand:#f3f0e8;--line:#dce3dc;--white:#fff;--radius:16px;
      --shadow:0 14px 34px rgba(20,45,37,.08);--max:1220px;
    }
    *{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:1.7}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.95);border-bottom:1px solid rgba(220,227,220,.85);backdrop-filter:blur(14px)}
    .navbar{height:76px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:11px;min-width:220px}
    .logo-mark{width:38px;height:38px;border:2px solid var(--pine);border-radius:10px 10px 10px 3px;display:grid;place-items:center;color:var(--pine);font-weight:800;font-size:19px;transform:rotate(-6deg)}
    .logo-text{font-size:18px;font-weight:800;letter-spacing:.02em;line-height:1.15}
    .logo-text small{display:block;color:var(--pine-2);font-size:10px;letter-spacing:.18em;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:4px;flex:1}
    .nav-links a{position:relative;padding:25px 13px;color:#53605c;font-size:14px}
    .nav-links a:hover,.nav-links a.active{color:var(--pine);font-weight:700}
    .nav-links a.active:after{content:"";position:absolute;left:13px;right:13px;bottom:16px;height:3px;border-radius:3px;background:var(--amber)}
    .nav-action,.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:9px;padding:11px 19px;font-weight:700;transition:.25s ease}
    .nav-action,.btn-primary{background:var(--amber);color:#fff}
    .nav-action:hover,.btn-primary:hover{background:var(--amber-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(185,109,33,.2)}
    .btn-secondary{border:1px solid var(--pine-2);color:var(--pine);background:transparent}
    .btn-secondary:hover{background:var(--pine);color:#fff;transform:translateY(-2px)}
    button:focus,a:focus,input:focus{outline:3px solid rgba(217,137,53,.35);outline-offset:3px}
    .menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:7px 10px;color:var(--pine)}
    .page-head{padding:66px 0 58px;background:var(--sand);border-bottom:1px solid var(--line)}
    .breadcrumb{font-size:13px;color:var(--muted);margin-bottom:24px}
    .breadcrumb a{color:var(--pine-2);font-weight:700}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--pine-2);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before,.section-kicker:before{content:"";width:25px;height:2px;background:var(--amber)}
    .page-head h1{max-width:760px;color:var(--pine);font-size:clamp(34px,5vw,56px);line-height:1.18;letter-spacing:-.04em;margin:17px 0 15px}
    .page-lead{max-width:760px;color:var(--muted);font-size:17px;margin:0}
    .section{padding:78px 0}
    .section.alt{background:#f7f5ef}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
    .section h2{font-size:31px;line-height:1.25;color:var(--pine);letter-spacing:-.025em;margin:8px 0}
    .section-intro{color:var(--muted);max-width:650px;margin:0}
    .channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .channel-card{background:#fff;border:1px solid var(--line);border-radius:13px;padding:22px 20px;min-height:142px}
    .channel-card.current{background:var(--pine);color:#fff;border-color:var(--pine)}
    .channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#9bbcaf}
    .channel-card h3{font-size:17px;margin:0 0 8px}
    .channel-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.65}
    .channel-card.current p{color:#d2e4dc}
    .download-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:stretch}
    .download-panel,.version-panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px}
    .download-panel h3,.version-panel h3{color:var(--pine);font-size:24px;margin:0 0 12px}
    .download-panel p,.version-panel p{color:var(--muted);font-size:14px}
    .download-actions{display:flex;gap:12px;flex-wrap:wrap;margin:25px 0}
    .security-note{border-left:3px solid var(--amber);background:#fff8ed;padding:14px 16px;color:#6f5a40;font-size:13px}
    .device-info{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:24px}
    .info-box{background:var(--pine-3);border-radius:11px;padding:15px}
    .info-box strong{display:block;color:var(--pine);font-size:14px}
    .info-box span{font-size:13px;color:var(--muted)}
    .entry-visual{display:flex;gap:22px;align-items:center;background:#e8f0eb;border-radius:15px;padding:24px;margin-top:20px}
    .entry-mark{width:112px;height:112px;flex:0 0 112px;border:8px solid #b8d0c4;border-radius:14px;background:repeating-linear-gradient(45deg,#fff 0 8px,#dceae2 8px 14px);display:grid;place-items:center;color:var(--pine);font-size:12px;text-align:center;font-weight:800}
    .entry-visual strong{color:var(--pine);display:block;margin-bottom:5px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:24px 20px;background:#fff;border:1px solid var(--line);border-radius:14px}
    .step-number{width:31px;height:31px;display:grid;place-items:center;border-radius:50%;background:var(--amber);color:#fff;font-weight:800;margin-bottom:17px}
    .step h3{font-size:17px;color:var(--pine);margin:0 0 7px}
    .step p{font-size:13px;color:var(--muted);margin:0}
    .updates-layout{display:grid;grid-template-columns:1fr .75fr;gap:28px}
    .news-list{background:#fff;border:1px solid var(--line);border-radius:16px;padding:8px 26px}
    .news-row{display:block;padding:19px 0;border-bottom:1px solid var(--line)}
    .news-row:last-child{border:0}
    .news-row:hover .news-title{color:var(--amber-dark)}
    .news-meta{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:12px}
    .badge{display:inline-block;background:var(--pine-3);color:var(--pine-2);border-radius:30px;padding:4px 10px;font-size:12px;font-weight:700}
    .news-title{font-weight:700;color:var(--pine);margin:7px 0 3px;font-size:17px}
    .news-summary{font-size:13px;color:var(--muted);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .empty-state{padding:48px 20px;text-align:center;color:var(--muted)}
    .notice-card{background:var(--pine);border-radius:18px;padding:31px;color:#fff}
    .notice-card h3{font-size:23px;margin:0 0 14px}
    .notice-card p{color:#cfe1d9;font-size:14px}
    .notice-list{list-style:none;padding:0;margin:25px 0 0}
    .notice-list li{padding:13px 0;border-bottom:1px solid rgba(255,255,255,.17);color:#e4eee9;font-size:14px}
    .notice-list li:last-child{border:0}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 20px}
    .faq-item summary{padding:18px 0;color:var(--pine);font-weight:700;cursor:pointer}
    .faq-item p{font-size:14px;color:var(--muted);margin:0 0 18px}
    .cta{background:var(--pine);color:#fff;padding:50px 0}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta h2{font-size:30px;margin:0 0 8px}
    .cta p{color:#c9ddd5;margin:0}
    .site-footer{background:#0d3029;color:#d8e6df;padding:54px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
    .footer-brand{font-size:20px;font-weight:800;color:#fff}
    .footer-brand small{font-size:10px;letter-spacing:.18em;color:#9fc0b2;margin-left:6px}
    .footer-note{color:#a9c1b8;font-size:13px;max-width:330px;margin-top:12px}
    .site-footer h3{font-size:14px;color:#fff;margin:0 0 12px}
    .site-footer a{display:block;color:#a9c1b8;font-size:13px;margin:7px 0}
    .site-footer a:hover{color:#f0bd7c}
    .copyright{display:flex;justify-content:space-between;gap:18px;border-top:1px solid rgba(216,230,223,.16);padding-top:20px;margin-top:38px;color:#91aaa0;font-size:12px}
    @media(max-width:1024px){.navbar{gap:14px}.logo{min-width:190px}.nav-links a{padding-left:8px;padding-right:8px}.channel-grid,.steps{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(var(--max),calc(100% - 32px))}.navbar{height:68px}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 20px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}.nav-links.open{display:flex}.nav-links a{padding:12px}.nav-links a.active:after{left:0;right:auto;bottom:7px;width:24px}.nav-action{display:none}.menu-toggle{display:block;margin-left:auto}.page-head{padding:48px 0}.download-layout,.updates-layout,.faq-grid{grid-template-columns:1fr}.section{padding:58px 0}.section-head{display:block}.section-head .text-link{display:inline-block;margin-top:12px}.cta-inner{display:block}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:6px}}
    @media(max-width:520px){.logo-text{font-size:15px}.logo{min-width:0}.logo-mark{width:34px;height:34px}.channel-grid,.steps,.device-info{grid-template-columns:1fr}.download-panel,.version-panel{padding:23px}.entry-visual{align-items:flex-start;flex-direction:column}.news-list{padding:8px 17px}.footer-grid{grid-template-columns:1fr}.page-head h1{font-size:35px}}

/* roulang page: category3 */
:root{
      --pine:#123f36;--pine-2:#1d5a4d;--pine-3:#e6f0eb;--amber:#d98935;
      --amber-dark:#b96d21;--ink:#1d2926;--muted:#68736f;--paper:#fffdf8;
      --sand:#f3f0e8;--line:#dce3dc;--white:#fff;--radius:16px;
      --shadow:0 14px 34px rgba(20,45,37,.08);--max:1220px;
    }
    *{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:1.7}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    a:focus,button:focus,input:focus{outline:3px solid rgba(217,137,53,.35);outline-offset:3px}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.95);border-bottom:1px solid rgba(220,227,220,.85);backdrop-filter:blur(14px)}
    .navbar{height:76px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:11px;min-width:220px}
    .logo-mark{width:38px;height:38px;border:2px solid var(--pine);border-radius:10px 10px 10px 3px;display:grid;place-items:center;color:var(--pine);font-weight:800;font-size:19px;transform:rotate(-6deg)}
    .logo-text{font-size:18px;font-weight:800;letter-spacing:.02em;line-height:1.15}
    .logo-text small{display:block;color:var(--pine-2);font-size:10px;letter-spacing:.18em;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:4px;flex:1}
    .nav-links a{position:relative;padding:25px 13px;color:#53605c;font-size:14px}
    .nav-links a:hover,.nav-links a.active{color:var(--pine);font-weight:700}
    .nav-links a.active:after{content:"";position:absolute;left:13px;right:13px;bottom:16px;height:3px;border-radius:3px;background:var(--amber)}
    .nav-action,.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:9px;padding:11px 19px;font-weight:700;transition:.25s ease}
    .nav-action,.btn-primary{background:var(--amber);color:#fff}
    .nav-action:hover,.btn-primary:hover{background:var(--amber-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(185,109,33,.2)}
    .btn-secondary{border:1px solid var(--pine-2);color:var(--pine);background:transparent}
    .btn-secondary:hover{background:var(--pine);color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:7px 10px;color:var(--pine)}
    .page-head{padding:68px 0 64px;background:var(--sand);border-bottom:1px solid var(--line)}
    .breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:25px}
    .breadcrumb span{color:var(--amber-dark)}
    .page-head h1{max-width:760px;color:var(--pine);font-size:clamp(34px,5vw,58px);line-height:1.18;letter-spacing:-.04em;margin:0 0 18px}
    .page-head p{max-width:700px;color:var(--muted);font-size:17px;margin:0}
    .section{padding:76px 0}
    .section.alt{background:#f7f5ef}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
    .section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--pine-2);font-size:13px;font-weight:800;letter-spacing:.08em}
    .section-kicker:before{content:"";width:25px;height:2px;background:var(--amber)}
    .section h2{font-size:32px;line-height:1.25;color:var(--pine);letter-spacing:-.025em;margin:9px 0}
    .section-intro{color:var(--muted);max-width:650px;margin:0}
    .topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .topic-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:23px 20px;min-height:155px}
    .topic-card:hover{border-color:#9bbcaf;transform:translateY(-4px);box-shadow:var(--shadow)}
    .topic-no{color:var(--amber-dark);font-size:13px;font-weight:800}
    .topic-card h3{color:var(--pine);font-size:18px;margin:12px 0 6px}
    .topic-card p{color:var(--muted);font-size:14px;margin:0}
    .content-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(280px,.75fr);gap:24px;align-items:start}
    .post-list{background:#fff;border:1px solid var(--line);border-radius:16px;padding:8px 28px}
    .post-item{display:block;padding:24px 0;border-bottom:1px solid var(--line)}
    .post-item:last-child{border-bottom:0}
    .post-item:hover .post-title{color:var(--amber-dark)}
    .post-meta{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:12px}
    .badge{display:inline-block;background:var(--pine-3);color:var(--pine-2);border-radius:30px;padding:4px 10px;font-size:12px;font-weight:700}
    .post-title{color:var(--pine);font-size:20px;font-weight:800;margin:10px 0 5px;line-height:1.45}
    .post-summary{color:var(--muted);font-size:14px;margin:0}
    .side-card{background:var(--pine);color:#fff;border-radius:16px;padding:28px;position:sticky;top:100px}
    .side-card h3{font-size:22px;margin:0 0 12px}
    .side-card p{color:#c9ddd5;font-size:14px}
    .side-list{padding:0;margin:22px 0 0;list-style:none}
    .side-list li{padding:13px 0;border-top:1px solid rgba(255,255,255,.18);font-size:14px}
    .side-list li:before{content:"✓";color:#e7b06e;font-weight:800;margin-right:9px}
    .empty-state{padding:42px 0;color:var(--muted);text-align:center}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:25px;background:#fff;border:1px solid var(--line);border-radius:14px}
    .step-number{width:35px;height:35px;border-radius:50%;background:var(--amber);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:18px}
    .step h3{font-size:17px;color:var(--pine);margin:0 0 7px}
    .step p{font-size:14px;color:var(--muted);margin:0}
    .scenario-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .scenario{display:flex;gap:18px;padding:25px;background:#fff;border:1px solid var(--line);border-radius:16px}
    .scenario-icon{width:46px;height:46px;flex:none;border-radius:12px;background:var(--pine-3);color:var(--pine);display:grid;place-items:center;font-size:20px;font-weight:800}
    .scenario h3{color:var(--pine);font-size:18px;margin:0 0 5px}
    .scenario p{color:var(--muted);font-size:14px;margin:0}
    .faq-list{max-width:900px;margin:auto}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:11px;overflow:hidden}
    .faq-item summary{padding:19px 22px;color:var(--pine);font-weight:800;cursor:pointer;list-style:none}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";float:right;color:var(--amber-dark);font-size:20px}
    .faq-item[open] summary:after{content:"－"}
    .faq-answer{padding:0 22px 20px;color:var(--muted);font-size:14px}
    .cta{padding:45px 0;background:var(--pine);color:#fff}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:24px}
    .cta h2{font-size:30px;margin:0 0 8px}
    .cta p{color:#c9ddd5;margin:0}
    .site-footer{background:#102f29;color:#d9e8e0;padding:52px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{font-size:20px;font-weight:800;color:#fff}
    .footer-brand small{font-size:10px;letter-spacing:.18em;color:#a9c9bc;margin-left:6px}
    .footer-note{color:#a9c1b7;font-size:13px;max-width:330px;margin-top:12px}
    .footer-grid h3{font-size:14px;color:#fff;margin:0 0 13px}
    .footer-grid a{display:block;color:#a9c1b7;font-size:13px;margin:7px 0}
    .footer-grid a:hover{color:#f0bd7a}
    .copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:38px;padding-top:18px;display:flex;justify-content:space-between;gap:18px;color:#91ada2;font-size:12px}
    @media(max-width:1024px){.nav-links a{padding-left:8px;padding-right:8px}.logo{min-width:190px}.topic-grid{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .navbar{height:68px;gap:12px}.logo{min-width:0;flex:1}.logo-text{font-size:16px}.menu-toggle{display:block}
      .nav-action{padding:9px 13px;font-size:13px}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:76px;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:8px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}.nav-links a{padding:12px 14px}.nav-links a.active:after{display:none}
      .page-head{padding:48px 0}.page-head h1{font-size:38px}.section{padding:58px 0}
      .content-layout{grid-template-columns:1fr}.side-card{position:static}.scenario-grid{grid-template-columns:1fr}
      .cta-inner{display:block}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:6px}
    }
    @media(max-width:520px){.topic-grid,.steps{grid-template-columns:1fr}.section h2{font-size:27px}.post-list{padding:5px 19px}.post-title{font-size:18px}.scenario{padding:20px}.footer-grid{grid-template-columns:1fr}.logo-mark{width:34px;height:34px;font-size:17px}.logo-text small{font-size:8px}}

/* roulang page: category4 */
:root{
      --pine:#123f36;--pine-2:#1d5a4d;--pine-3:#e6f0eb;--amber:#d98935;
      --amber-dark:#b96d21;--ink:#1d2926;--muted:#68736f;--paper:#fffdf8;
      --sand:#f3f0e8;--line:#dce3dc;--white:#fff;--radius:16px;
      --shadow:0 14px 34px rgba(20,45,37,.08);--max:1220px
    }
    *{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:1.7}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    button:focus,a:focus,input:focus{outline:3px solid rgba(217,137,53,.35);outline-offset:3px}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.95);border-bottom:1px solid rgba(220,227,220,.85);backdrop-filter:blur(14px)}
    .navbar{height:76px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:11px;min-width:220px}
    .logo-mark{width:38px;height:38px;border:2px solid var(--pine);border-radius:10px 10px 10px 3px;display:grid;place-items:center;color:var(--pine);font-weight:800;font-size:19px;transform:rotate(-6deg)}
    .logo-text{font-size:18px;font-weight:800;letter-spacing:.02em;line-height:1.15}
    .logo-text small{display:block;color:var(--pine-2);font-size:10px;letter-spacing:.18em;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:4px;flex:1}
    .nav-links a{position:relative;padding:25px 13px;color:#53605c;font-size:14px}
    .nav-links a:hover,.nav-links a.active{color:var(--pine);font-weight:700}
    .nav-links a.active:after{content:"";position:absolute;left:13px;right:13px;bottom:16px;height:3px;border-radius:3px;background:var(--amber)}
    .nav-action,.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:9px;padding:11px 19px;font-weight:700;transition:.25s ease}
    .nav-action,.btn-primary{background:var(--amber);color:#fff}
    .nav-action:hover,.btn-primary:hover{background:var(--amber-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(185,109,33,.2)}
    .btn-secondary{border:1px solid var(--pine-2);color:var(--pine);background:transparent}
    .btn-secondary:hover{background:var(--pine);color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:7px 10px;color:var(--pine)}
    .page-hero{padding:70px 0 62px;background:var(--sand);border-bottom:1px solid var(--line)}
    .breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:25px}
    .breadcrumb a:hover{color:var(--amber-dark)}
    .breadcrumb span:last-child{color:var(--pine);font-weight:700}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--pine-2);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:25px;height:2px;background:var(--amber)}
    .page-hero h1{font-size:clamp(34px,5vw,58px);line-height:1.16;letter-spacing:-.04em;color:var(--pine);margin:16px 0 16px}
    .page-hero p{max-width:720px;color:var(--muted);font-size:17px;margin:0}
    .section{padding:76px 0}
    .section.alt{background:#f7f5ef}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}
    .section h2{font-size:31px;line-height:1.25;color:var(--pine);letter-spacing:-.025em;margin:7px 0}
    .section-intro{color:var(--muted);max-width:620px;margin:0}
    .text-link{color:var(--pine-2);font-weight:700;border-bottom:1px solid #adc8bb;padding-bottom:2px}
    .text-link:hover{color:var(--amber-dark);border-color:var(--amber)}
    .channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .channel-card{background:#fff;border:1px solid var(--line);border-radius:13px;padding:21px 19px;min-height:150px}
    .channel-card.current{background:var(--pine);color:#fff;border-color:var(--pine)}
    .channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#9bbcaf}
    .channel-card .num{font-size:12px;color:var(--amber-dark);font-weight:800;letter-spacing:.08em}
    .channel-card.current .num{color:#f2c17e}
    .channel-card h3{font-size:17px;margin:12px 0 6px;color:var(--pine)}
    .channel-card.current h3{color:#fff}
    .channel-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.6}
    .channel-card.current p{color:#c9ddd5}
    .update-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}
    .update-list,.status-panel,.topic-card,.notice-box,.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
    .update-list{padding:10px 30px}
    .update-row{display:grid;grid-template-columns:105px 1fr auto;gap:22px;align-items:center;padding:23px 0;border-bottom:1px solid var(--line)}
    .update-row:last-child{border-bottom:0}
    .update-date{font-size:13px;color:var(--amber-dark);font-weight:800}
    .update-row h3{font-size:18px;color:var(--pine);margin:0 0 4px}
    .update-row p{font-size:13px;color:var(--muted);margin:0}
    .status-tag,.badge{display:inline-block;background:var(--pine-3);color:var(--pine-2);border-radius:30px;padding:4px 10px;font-size:12px;font-weight:700;white-space:nowrap}
    .status-panel{padding:30px;background:var(--pine);color:#fff}
    .status-panel h3{font-size:23px;margin:0 0 12px}
    .status-panel p{color:#c9ddd5;font-size:14px}
    .status-line{display:flex;justify-content:space-between;gap:15px;border-top:1px solid rgba(255,255,255,.18);padding:15px 0;font-size:14px}
    .status-line strong{color:#f2c17e}
    .topic-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .topic-card{padding:29px;min-height:190px}
    .topic-card.feature{background:var(--pine);color:#fff}
    .topic-card h3{color:var(--pine);font-size:21px;margin:9px 0}
    .topic-card.feature h3{color:#fff}
    .topic-card p{color:var(--muted);font-size:14px;margin:0}
    .topic-card.feature p{color:#c9ddd5}
    .topic-meta{font-size:12px;color:var(--amber-dark);font-weight:800}
    .topic-card.feature .topic-meta{color:#f2c17e}
    .support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .support-card{padding:24px;background:#fff;border:1px solid var(--line);border-radius:13px}
    .support-icon{width:38px;height:38px;display:grid;place-items:center;background:var(--pine-3);color:var(--pine);border-radius:10px;font-weight:800}
    .support-card h3{font-size:17px;color:var(--pine);margin:15px 0 6px}
    .support-card p{font-size:13px;color:var(--muted);margin:0}
    .faq-list{max-width:850px;margin:auto}
    .faq-item{margin-bottom:12px;overflow:hidden}
    .faq-item summary{padding:18px 22px;color:var(--pine);font-weight:700;cursor:pointer;list-style:none;position:relative;padding-right:50px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";position:absolute;right:20px;color:var(--amber-dark);font-size:20px}
    .faq-item[open] summary:after{content:"−"}
    .faq-answer{padding:0 22px 19px;color:var(--muted);font-size:14px;border-top:1px solid var(--line)}
    .responsibility{padding:27px 30px;background:#eef3ed;border:1px solid #d5e1d8;border-radius:var(--radius);display:flex;gap:20px;align-items:flex-start}
    .responsibility strong{display:block;color:var(--pine);margin-bottom:4px}
    .responsibility p{margin:0;color:var(--muted);font-size:13px}
    .cta{padding:48px 0;background:var(--pine);color:#fff}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta h2{margin:0 0 8px;font-size:30px}
    .cta p{margin:0;color:#c9ddd5}
    .site-footer{background:#102e29;color:#dce8e1;padding:54px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.7fr repeat(3,1fr);gap:36px}
    .footer-brand{font-weight:800;font-size:20px;color:#fff}
    .footer-brand small{font-size:10px;letter-spacing:.15em;color:#9fc0b3;margin-left:7px}
    .footer-note{max-width:310px;color:#a9bdb5;font-size:13px;margin-top:14px}
    .footer-grid h3{font-size:14px;color:#fff;margin:3px 0 13px}
    .footer-grid a{display:block;color:#a9bdb5;font-size:13px;margin:8px 0}
    .footer-grid a:hover{color:#f1bd77}
    .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.14);margin-top:38px;padding-top:18px;color:#91aaa0;font-size:12px}
    @media(max-width:1024px){
      .navbar{gap:14px}.logo{min-width:190px}.nav-links a{padding-left:8px;padding-right:8px}
      .nav-action{padding:10px 13px}.channel-grid{grid-template-columns:repeat(2,1fr)}
      .update-layout,.topic-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1.5fr repeat(3,1fr);gap:20px}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .navbar{height:68px;justify-content:space-between}.menu-toggle{display:block}
      .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 18px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
      .nav-links.open{display:flex}.nav-links a{padding:12px 10px}.nav-links a.active:after{left:10px;right:auto;width:28px;bottom:5px}
      .nav-action{display:none}.page-hero{padding:52px 0 48px}.section{padding:58px 0}
      .section-head{display:block}.section-head .text-link{display:inline-block;margin-top:12px}
      .update-row{grid-template-columns:1fr;gap:7px}.update-row .text-link{justify-self:start}
      .support-grid{grid-template-columns:1fr}.cta-inner{display:block}.cta .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:7px}
    }
    @media(max-width:520px){
      .logo{min-width:0}.logo-text{font-size:15px}.logo-mark{width:34px;height:34px;font-size:16px}
      .channel-grid{grid-template-columns:1fr}.page-hero h1{font-size:35px}.page-hero p{font-size:15px}
      .update-list{padding:8px 18px}.topic-card,.status-panel{padding:23px}.responsibility{padding:22px;display:block}
      .footer-grid{grid-template-columns:1fr}
    }