/* roulang page: index */
:root{
  --bg:#f7f7f3;--paper:#fff;--ink:#202622;--muted:#68716a;--green:#177b68;--green-dark:#0e5d4e;
  --green-pale:#e6f1ed;--apricot:#f0e4ce;--line:#e1e5de;--footer:#26332e;--radius:18px;
  --shadow:0 14px 34px rgba(26,45,37,.08);--shadow-hover:0 19px 42px rgba(26,45,37,.14);
  --container:1200px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}img{max-width:100%;display:block}.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}.section{padding:84px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:34px}.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:13px;font-weight:700;letter-spacing:.08em}.eyebrow:before{content:"";width:22px;height:2px;background:currentColor}.section h2{font-size:30px;line-height:1.28;letter-spacing:-.03em;margin:7px 0 0}.section-intro{max-width:600px;margin:0;color:var(--muted)}
.site-header{position:sticky;top:0;z-index:50;background:rgba(247,247,243,.96);border-bottom:1px solid rgba(225,229,222,.9)}.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;font-weight:800;font-size:17px;letter-spacing:-.04em}.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:16px;box-shadow:0 6px 12px rgba(23,123,104,.22)}.nav-list{display:flex;align-items:center;gap:4px;margin-left:auto}.nav-list a{position:relative;padding:10px 12px;color:#4e5851;font-size:14px;font-weight:600;transition:.2s}.nav-list a:after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;transform:scaleX(0);background:var(--green);transition:.2s}.nav-list a:hover,.nav-list a.active{color:var(--green)}.nav-list a.active:after{transform:scaleX(1)}.btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;min-height:46px;padding:11px 18px;border:1px solid transparent;border-radius:12px;font-size:14px;font-weight:700;transition:transform .2s,background .2s,border .2s,box-shadow .2s}.btn:hover{transform:translateY(-2px)}.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(23,123,104,.25);outline-offset:3px}.btn-primary{background:var(--green);color:#fff;box-shadow:0 7px 14px rgba(23,123,104,.18)}.btn-primary:hover{background:var(--green-dark)}.btn-light{background:#fff;border-color:var(--line);color:var(--ink)}.btn-light:hover{border-color:#b9d5cc;background:var(--green-pale)}.header-download{margin-left:9px}.menu-toggle{display:none;border:0;background:transparent;width:44px;height:44px;color:var(--ink);font-size:22px}
.hero{position:relative;overflow:hidden;padding:78px 0 66px;background:linear-gradient(135deg,#f7f7f3 0%,#f7f7f3 62%,#edf4f0 100%)}.hero:before{content:"";position:absolute;width:580px;height:580px;right:-190px;top:-240px;border:1px solid rgba(23,123,104,.15);border-radius:50%}.hero:after{content:"";position:absolute;width:230px;height:230px;left:43%;bottom:-150px;border:40px solid rgba(240,228,206,.5);border-radius:50%}.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.06fr .94fr;gap:62px;align-items:center}.hero h1{font-size:46px;line-height:1.18;letter-spacing:-.055em;max-width:650px;margin:15px 0 21px}.hero p{max-width:610px;color:var(--muted);font-size:17px;margin:0}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.trust-line{display:flex;gap:22px;flex-wrap:wrap;margin-top:30px;color:#58635c;font-size:13px}.trust-line span{display:flex;align-items:center;gap:7px}.trust-line i{display:block;width:7px;height:7px;background:var(--green);border-radius:50%}
.download-card{position:relative;background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:var(--shadow);overflow:hidden}.download-card:before{content:"";position:absolute;right:-38px;top:-38px;width:150px;height:150px;border-radius:50%;background:var(--green-pale)}.card-top{position:relative;display:flex;justify-content:space-between;align-items:flex-start;gap:15px}.app-symbol{width:54px;height:54px;border-radius:17px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:24px;box-shadow:0 8px 16px rgba(23,123,104,.22)}.app-title{font-size:20px;font-weight:800;margin:0}.app-meta{color:var(--muted);font-size:13px;margin:2px 0 0}.app-display{height:116px;margin:25px 0 20px;padding:18px;border-radius:16px;background:#f2f6f3;overflow:hidden}.screen-bar{width:42%;height:8px;border-radius:10px;background:#d4e7df;margin-bottom:14px}.screen-card{height:54px;border-radius:12px;background:#fff;border:1px solid #e3ece7;display:flex;align-items:center;padding:12px;gap:10px}.screen-dot{width:30px;height:30px;border-radius:9px;background:#d9eee6}.screen-lines{flex:1}.screen-lines b,.screen-lines em{display:block;border-radius:8px;background:#dbe7e2;height:7px}.screen-lines em{width:64%;margin-top:7px}.download-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}.platform-btn{min-height:50px;border:1px solid var(--line);border-radius:13px;background:#fff;color:var(--ink);font-weight:700;transition:.2s}.platform-btn:hover{color:var(--green);background:var(--green-pale);border-color:#b6d7cd}.download-note{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-top:19px;padding-top:16px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.qr-mini{width:38px;height:38px;background:repeating-linear-gradient(45deg,#26332e 0 3px,#fff 3px 6px);border:3px solid #fff;outline:1px solid var(--line)}
.notice-strip{padding:0 0 25px}.notice-grid{display:grid;grid-template-columns:repeat(4,1fr);background:var(--paper);border:1px solid var(--line);border-radius:16px;overflow:hidden}.notice-item{padding:19px 22px;border-right:1px solid var(--line);display:flex;gap:12px}.notice-item:last-child{border:0}.notice-icon{width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:var(--green-pale);color:var(--green);display:grid;place-items:center;font-weight:800}.notice-item b{display:block;font-size:14px}.notice-item span{display:block;font-size:12px;color:var(--muted);line-height:1.55;margin-top:2px}
.download-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:58px;align-items:start}.steps{border-left:1px solid #cbd8d2;margin:20px 0 0 15px}.step{position:relative;padding:0 0 29px 30px}.step:last-child{padding-bottom:0}.step-num{position:absolute;left:-16px;top:0;width:31px;height:31px;border-radius:50%;background:var(--apricot);display:grid;place-items:center;font-size:12px;font-weight:800}.step h3{margin:0 0 5px;font-size:18px}.step p{margin:0;color:var(--muted);font-size:14px}.system-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.system-card{padding:25px;border:1px solid var(--line);background:#fff;border-radius:var(--radius);transition:.25s}.system-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#c6d9d1}.system-card h3{margin:13px 0 7px}.system-card p{font-size:14px;color:var(--muted);margin:0 0 19px}.system-icon{font-size:27px;color:var(--green)}
.feature-map{display:grid;grid-template-columns:1.3fr .7fr .85fr;grid-template-rows:148px 148px;gap:16px}.feature-box{position:relative;padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}.feature-box:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.feature-box:nth-child(1){grid-row:span 2;background:#edf5f1}.feature-box:nth-child(4){grid-column:span 2;background:#fcfaf5}.feature-box h3{margin:7px 0;font-size:19px}.feature-box p{margin:0;color:var(--muted);font-size:13px;line-height:1.65}.feature-icon{font-size:23px;color:var(--green)}
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden}.version{padding:27px;min-height:180px;border-right:1px solid var(--line);position:relative}.version:last-child{border:0}.version.current{background:#edf5f1}.version .dot{width:10px;height:10px;border-radius:50%;background:var(--green);margin-bottom:18px}.version time{font-size:12px;color:var(--muted)}.version h3{margin:5px 0;font-size:19px}.version p{font-size:13px;color:var(--muted);margin:0}.version a{display:inline-block;font-size:13px;color:var(--green);font-weight:700;margin-top:13px}
.news-area{background:#eef3ef}.news-layout{display:grid;grid-template-columns:1.04fr .96fr;gap:18px}.featured-news{min-height:276px;padding:31px;background:#26332e;color:#fff;border-radius:20px;display:flex;flex-direction:column;justify-content:end}.tag{display:inline-flex;align-items:center;width:max-content;padding:4px 9px;border-radius:20px;background:var(--apricot);color:#705d3d;font-size:12px;font-weight:700}.featured-news .tag{background:rgba(240,228,206,.95)}.featured-news h3{font-size:25px;line-height:1.35;margin:14px 0 10px}.featured-news p{color:#c9d4ce;margin:0;font-size:14px}.featured-news a{margin-top:17px;color:#fff;font-size:14px;font-weight:700}.news-list{display:grid;gap:10px}.news-item{display:block;padding:17px 20px;background:#fff;border:1px solid var(--line);border-radius:14px;transition:.2s}.news-item:hover{transform:translateX(4px);box-shadow:var(--shadow);border-color:#bfd7ce}.news-item-top{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:12px}.news-item h3{font-size:16px;margin:7px 0 3px;line-height:1.4}.news-item p{font-size:13px;color:var(--muted);line-height:1.55;margin:0;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}.news-empty{padding:45px;text-align:center;background:#fff;border:1px dashed #c8d4ce;border-radius:18px;color:var(--muted)}.news-footer{margin-top:24px;text-align:right}.text-link{color:var(--green);font-size:14px;font-weight:800;border-bottom:1px solid transparent}.text-link:hover{border-color:currentColor}
.tutorial-grid{display:grid;grid-template-columns:.74fr 1.26fr;gap:22px}.tutorial-menu{border:1px solid var(--line);border-radius:18px;padding:11px;background:#fff}.tutorial-menu div{padding:16px 14px;border-bottom:1px solid var(--line);font-weight:700}.tutorial-menu div:last-child{border:0}.tutorial-menu span{display:inline-grid;place-items:center;width:25px;height:25px;margin-right:9px;border-radius:8px;background:var(--apricot);font-size:12px}.tutorial-feature{padding:30px;border-radius:18px;background:#f0f5f2;border:1px solid #d6e4de}.tutorial-feature h3{font-size:24px;margin:12px 0}.tutorial-feature p{max-width:590px;color:var(--muted);margin:0 0 20px}
.browser-layout{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:center}.browser-copy p{color:var(--muted)}.check-list{padding:0;margin:21px 0;list-style:none}.check-list li{padding:9px 0;border-bottom:1px solid var(--line);font-size:14px}.check-list li:before{content:"✓";color:var(--green);font-weight:800;margin-right:10px}.browser-window{padding:13px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:17px}.browser-top{display:flex;align-items:center;gap:6px;padding:3px 4px 13px}.browser-top i{width:8px;height:8px;border-radius:50%;background:#d4dbd6}.address{margin-left:8px;flex:1;background:#f1f4f1;color:#88918b;padding:6px 10px;border-radius:7px;font-size:12px}.browser-body{height:220px;padding:25px;border-radius:10px;background:linear-gradient(135deg,#eef6f2,#fbfaf6)}.browser-body b{font-size:19px}.browser-body span{display:block;width:60%;height:9px;border-radius:9px;background:#d4e4dc;margin-top:17px}.browser-body span:last-child{width:39%}
.service-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.service-card{min-height:235px;padding:31px;border-radius:20px;position:relative;overflow:hidden}.service-card:first-child{background:#fff;border:1px solid var(--line)}.service-card:last-child{background:#e7f1ed}.service-card h3{font-size:24px;margin:8px 0}.service-card p{max-width:400px;color:var(--muted);font-size:14px}.service-shape{position:absolute;right:-20px;bottom:-37px;width:150px;height:150px;border:22px solid rgba(23,123,104,.13);border-radius:27px;transform:rotate(22deg)}
.security-panel{padding:35px 38px;border-radius:20px;background:var(--apricot);display:grid;grid-template-columns:.8fr 1.2fr;gap:36px}.security-panel h2{margin:7px 0;font-size:28px}.security-panel p{color:#6f6555;margin:0}.security-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.security-list div{padding:13px 14px;background:rgba(255,255,255,.52);border-radius:11px;font-size:14px;font-weight:700}.security-list b{color:var(--green);margin-right:8px}
.guide-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:16px}.guide-card{min-height:175px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:18px;transition:.2s}.guide-card:first-child{grid-row:span 2;background:#edf5f1}.guide-card:last-child{grid-column:span 2;background:#fcfaf6}.guide-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.guide-card h3{margin:12px 0 7px}.guide-card p{margin:0;color:var(--muted);font-size:13px}.guide-card a{display:inline-block;margin-top:14px;color:var(--green);font-size:13px;font-weight:800}
.faq-wrap{max-width:900px;margin:auto}.faq-item{border-top:1px solid var(--line)}.faq-item:last-child{border-bottom:1px solid var(--line)}.faq-question{width:100%;padding:20px 4px;border:0;background:transparent;display:flex;align-items:center;text-align:left;gap:18px;color:var(--ink);font-weight:800;font-size:16px}.faq-num{color:var(--green);font-size:13px}.faq-question i{margin-left:auto;font-style:normal;font-size:23px;color:var(--green);transition:.2s}.faq-answer{display:none;padding:0 42px 21px;color:var(--muted);font-size:14px}.faq-item.open .faq-answer{display:block}.faq-item.open .faq-question i{transform:rotate(45deg)}
.support-section{background:#edf3ef}.support-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}.support-copy h2{font-size:31px;margin:8px 0}.support-copy p{color:var(--muted)}.support-points{display:grid;gap:11px;margin-top:25px}.support-points div{font-size:14px;padding-bottom:11px;border-bottom:1px solid #d5dfd9}.support-form{padding:26px;background:#fff;border:1px solid var(--line);border-radius:18px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:grid;gap:6px}.field.full{grid-column:span 2}.field label{font-size:13px;font-weight:700}.field em{color:var(--green);font-style:normal}.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 12px;background:#fff;color:var(--ink);transition:.2s}.field textarea{min-height:92px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);outline:none;box-shadow:0 0 0 3px rgba(23,123,104,.11)}.privacy{font-size:12px;color:var(--muted);margin:12px 0}
.bottom-cta{padding:57px 0;background:var(--footer);color:#fff}.cta-grid{display:flex;justify-content:space-between;align-items:center;gap:30px}.bottom-cta h2{font-size:30px;margin:0 0 8px}.bottom-cta p{margin:0;color:#b9c8c0;font-size:14px}.cta-side{display:flex;align-items:center;gap:17px}.qr-large{width:70px;height:70px;padding:5px;background:#fff;background-clip:content-box;border:5px solid #fff;outline:1px solid rgba(255,255,255,.3);background-image:repeating-linear-gradient(45deg,#26332e 0 4px,#fff 4px 8px)}
.footer{background:#202a26;color:#c4d0ca;padding:54px 0 22px}.footer-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr;gap:40px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.12)}.footer .brand{color:#fff}.footer p{font-size:13px;max-width:390px;color:#aebdb5}.footer h3{font-size:14px;color:#fff;margin:3px 0 13px}.footer-links{display:grid;gap:8px}.footer-links a{font-size:13px;transition:.2s}.footer-links a:hover{color:#fff}.copyright{display:flex;justify-content:space-between;gap:20px;padding-top:18px;font-size:12px;color:#91a39a}
@media(max-width:1024px){.nav-list{gap:0}.nav-list a{padding:10px 8px}.hero-grid,.download-layout,.browser-layout,.support-grid{grid-template-columns:1fr;gap:38px}.hero h1{font-size:42px}.download-card{max-width:680px}.feature-map{grid-template-columns:1fr 1fr}.feature-box:nth-child(1){grid-row:auto}.feature-box:nth-child(4){grid-column:auto}.news-layout{grid-template-columns:1fr}.guide-grid{grid-template-columns:1fr 1fr}.guide-card:first-child,.guide-card:last-child{grid-row:auto;grid-column:auto}}
@media(max-width:768px){.container{width:min(calc(100% - 34px),var(--container))}.site-header{position:relative}.nav-list,.header-download{display:none}.menu-toggle{display:block}.mobile-menu{display:none;padding:0 17px 18px}.mobile-menu.open{display:grid;gap:5px}.mobile-menu a{padding:12px;border-bottom:1px solid var(--line);font-weight:700;font-size:14px}.mobile-menu .btn{margin-top:9px}.section{padding:58px 0}.section-head{display:block;margin-bottom:25px}.section-intro{margin-top:12px}.hero{padding:55px 0}.hero h1{font-size:33px}.hero p{font-size:16px}.notice-grid{grid-template-columns:1fr 1fr}.notice-item:nth-child(2){border-right:0}.notice-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.system-grid,.timeline,.service-grid,.security-panel{grid-template-columns:1fr}.version{border-right:0;border-bottom:1px solid var(--line);min-height:auto}.version:last-child{border:0}.security-list{grid-template-columns:1fr 1fr}.tutorial-grid{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:span 2}.cta-grid{align-items:flex-start;flex-direction:column}}
@media(max-width:520px){.hero-actions,.hero-actions .btn{width:100%}.download-row{grid-template-columns:1fr}.notice-grid,.feature-map,.guide-grid,.security-list{grid-template-columns:1fr}.notice-item{border-right:0!important;border-bottom:1px solid var(--line)}.notice-item:last-child{border-bottom:0}.feature-box{min-height:145px}.section h2{font-size:26px}.service-card{min-height:210px}.support-form{padding:20px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.copyright{display:block}.copyright span{display:block;margin-bottom:5px}.cta-side{width:100%;justify-content:space-between}.bottom-cta h2{font-size:26px}}

/* roulang page: article */
:root{
  --bg:#f7f7f3;--paper:#fff;--ink:#202622;--muted:#68716a;--green:#177b68;--green-dark:#0e5d4e;
  --green-pale:#e6f1ed;--apricot:#f0e4ce;--line:#e1e5de;--footer:#26332e;--radius:18px;
  --shadow:0 14px 34px rgba(26,45,37,.08);--shadow-hover:0 19px 42px rgba(26,45,37,.14);
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(247,247,243,.97);border-bottom:1px solid rgba(225,229,222,.9)}
.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;font-weight:800;font-size:17px;letter-spacing:-.04em}
.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:16px;box-shadow:0 6px 12px rgba(23,123,104,.22)}
.nav-list{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-list a{position:relative;padding:10px 12px;color:#4e5851;font-size:14px;font-weight:600;transition:.2s}
.nav-list a:after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;transform:scaleX(0);background:var(--green);transition:.2s}
.nav-list a:hover,.nav-list a.active{color:var(--green)}
.nav-list a.active:after{transform:scaleX(1)}
.btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;min-height:46px;padding:11px 18px;border:1px solid transparent;border-radius:12px;font-size:14px;font-weight:700;transition:transform .2s,background .2s,border .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px)}
.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(23,123,104,.25);outline-offset:3px}
.btn-primary{background:var(--green);color:#fff;box-shadow:0 7px 14px rgba(23,123,104,.18)}
.btn-primary:hover{background:var(--green-dark)}
.btn-light{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-light:hover{border-color:#b9d5cc;background:var(--green-pale)}
.header-download{margin-left:9px}
.menu-toggle{display:none;border:0;background:transparent;width:44px;height:44px;color:var(--ink);font-size:23px;padding:0}
.article-hero{padding:42px 0 54px;background:linear-gradient(135deg,#f7f7f3 0%,#f7f7f3 66%,#edf4f0 100%);border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:13px;margin-bottom:25px}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--green)}
.breadcrumb i{font-style:normal;color:#a0a8a2}
.article-category{display:inline-flex;align-items:center;gap:7px;padding:5px 10px;border-radius:99px;background:var(--apricot);color:#705d3d;font-size:12px;font-weight:800}
.article-hero h1{max-width:890px;font-size:42px;line-height:1.24;letter-spacing:-.045em;margin:15px 0 17px}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;color:var(--muted);font-size:13px}
.article-meta span+span:before{content:"";display:inline-block;width:4px;height:4px;margin:0 12px 2px 0;border-radius:50%;background:#a7b0a9}
.article-layout{display:grid;grid-template-columns:minmax(0,780px) 270px;justify-content:space-between;gap:64px;padding:52px 0 88px}
.article-main{min-width:0}
.article-summary{padding:22px 24px;border:1px solid #e4d5ba;border-radius:15px;background:#fcf8ef;color:#4f514d;margin-bottom:42px}
.article-summary b{display:flex;align-items:center;gap:8px;color:#705d3d;font-size:14px;margin-bottom:8px}
.article-summary p{margin:0;font-size:15px;line-height:1.85}
.article-content{font-size:17px;line-height:1.95;color:#303832;word-break:break-word}
.article-content>*:first-child{margin-top:0}
.article-content h2{font-size:28px;line-height:1.35;letter-spacing:-.03em;margin:54px 0 19px;color:var(--ink)}
.article-content h3{font-size:21px;line-height:1.45;margin:36px 0 15px;color:var(--ink)}
.article-content p{margin:0 0 21px}
.article-content ul,.article-content ol{padding-left:1.5em;margin:0 0 22px}
.article-content li{padding-left:4px;margin:8px 0}
.article-content blockquote{margin:30px 0;padding:18px 22px;border-left:4px solid var(--green);border-radius:0 12px 12px 0;background:var(--green-pale);color:#345247}
.article-content img{margin:30px auto;border:1px solid var(--line);border-radius:13px;box-shadow:var(--shadow)}
.article-content table{width:100%;margin:28px 0;border-collapse:separate;border-spacing:0;overflow:hidden;border:1px solid var(--line);border-radius:12px;font-size:15px}
.article-content th,.article-content td{padding:12px 14px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);text-align:left}
.article-content th{background:#f0f5f2;font-weight:700}
.article-content tr:last-child td{border-bottom:0}
.article-content th:last-child,.article-content td:last-child{border-right:0}
.article-content a{color:var(--green);font-weight:700;border-bottom:1px solid rgba(23,123,104,.35)}
.article-content .notice,.article-content .tips,.article-content .warning{margin:28px 0;padding:18px 20px;border-radius:13px}
.article-content .notice,.article-content .tips{background:var(--green-pale);border:1px solid #cce0d8}
.article-content .warning{background:#fcf8ef;border:1px solid #eadcbf}
.article-aside{padding-top:5px}
.aside-card{position:sticky;top:98px;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);box-shadow:0 10px 25px rgba(26,45,37,.045)}
.aside-card h2{font-size:17px;margin:0 0 14px}
.aside-card p{margin:0 0 16px;color:var(--muted);font-size:14px;line-height:1.75}
.aside-links{display:grid;gap:2px;border-top:1px solid var(--line);padding-top:10px}
.aside-links a{display:flex;align-items:center;justify-content:space-between;padding:9px 0;color:#46514a;font-size:14px;font-weight:650;transition:.2s}
.aside-links a:after{content:"→";color:var(--green);transition:transform .2s}
.aside-links a:hover{color:var(--green)}
.aside-links a:hover:after{transform:translateX(3px)}
.reading-note{margin-top:30px;padding:20px 22px;border-radius:15px;background:#fff;border:1px solid var(--line)}
.reading-note h2{font-size:18px;margin:0 0 9px}
.reading-note p{margin:0;color:var(--muted);font-size:14px}
.article-bottom{margin-top:56px;padding-top:28px;border-top:1px solid var(--line)}
.article-bottom-inner{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:25px 28px;border-radius:18px;background:#edf5f1}
.article-bottom h2{font-size:20px;line-height:1.4;margin:0 0 5px}
.article-bottom p{margin:0;color:var(--muted);font-size:14px}
.not-found{padding:52px 30px;text-align:center;background:var(--paper);border:1px solid var(--line);border-radius:20px}
.not-found-icon{width:54px;height:54px;margin:0 auto 15px;display:grid;place-items:center;border-radius:17px;background:var(--green-pale);color:var(--green);font-size:24px}
.not-found h2{font-size:24px;margin:0 0 8px}
.not-found p{color:var(--muted);margin:0 0 20px}
.related-section{padding:0 0 84px}
.related-wrap{padding-top:43px;border-top:1px solid var(--line)}
.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:13px;font-weight:800;letter-spacing:.06em}
.section-kicker:before{content:"";width:22px;height:2px;background:currentColor}
.related-wrap h2{font-size:29px;letter-spacing:-.03em;margin:7px 0 24px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.related-card{min-height:190px;padding:23px;display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);transition:.25s}
.related-card:hover{transform:translateY(-4px);border-color:#bfd7ce;box-shadow:var(--shadow-hover)}
.related-card span{display:inline-flex;width:max-content;padding:4px 9px;border-radius:20px;background:var(--green-pale);color:var(--green);font-size:12px;font-weight:800}
.related-card h3{font-size:18px;line-height:1.45;margin:15px 0 auto}
.related-card p{color:var(--muted);font-size:13px;margin:10px 0 0}
.related-card a{margin-top:16px;color:var(--green);font-size:14px;font-weight:800}
.support-strip{padding:50px 0;background:var(--footer);color:#fff}
.support-inner{display:flex;justify-content:space-between;align-items:center;gap:35px}
.support-inner h2{font-size:28px;line-height:1.35;margin:0 0 8px}
.support-inner p{margin:0;color:#bdc9c2;font-size:15px}
.support-actions{display:flex;gap:11px;flex-shrink:0}
.support-strip .btn-light{border-color:#60726a;background:transparent;color:#fff}
.support-strip .btn-light:hover{background:#384942;border-color:#8da99d}
.footer{background:var(--footer);color:#dce5df;padding:57px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.45fr .8fr .8fr;gap:50px;padding-bottom:38px}
.footer .brand{color:#fff;margin-bottom:15px}
.footer p{max-width:395px;margin:0;color:#aebcb4;font-size:14px;line-height:1.8}
.footer h3{font-size:14px;color:#fff;margin:5px 0 14px}
.footer-links{display:grid;gap:8px}
.footer-links a{color:#aebcb4;font-size:14px;transition:.2s}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.copyright{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid rgba(220,229,223,.16);color:#9eada5;font-size:13px}
.mobile-panel{display:none}
@media(max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,760px);justify-content:start;gap:30px}
  .article-aside{display:none}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .nav-list a{padding:10px 8px}
  .brand{font-size:15px}
}
@media(max-width:768px){
  .container{width:min(calc(100% - 32px),var(--container))}
  .nav-wrap{height:68px}
  .nav-list,.header-download{display:none}
  .menu-toggle{display:grid;place-items:center;margin-left:auto}
  .mobile-panel{display:none;padding:12px 16px 20px;border-top:1px solid var(--line);background:var(--bg)}
  .mobile-panel.open{display:grid;gap:3px}
  .mobile-panel a{padding:11px 7px;border-bottom:1px solid rgba(225,229,222,.8);font-size:15px;font-weight:700}
  .mobile-panel .btn{margin-top:10px}
  .article-hero{padding:31px 0 38px}
  .article-hero h1{font-size:31px;line-height:1.3;margin-top:13px}
  .article-layout{padding:35px 0 58px}
  .article-summary{padding:18px 19px;margin-bottom:33px}
  .article-content{font-size:16px;line-height:1.9}
  .article-content h2{font-size:24px;margin-top:42px}
  .article-content h3{font-size:19px}
  .article-content table{display:block;overflow-x:auto;white-space:nowrap}
  .article-bottom-inner,.support-inner{align-items:flex-start;flex-direction:column}
  .related-section{padding-bottom:58px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .footer-grid>div:first-child{grid-column:1/-1}
}
@media(max-width:520px){
  .brand{font-size:14px}
  .brand-mark{width:32px;height:32px}
  .article-category{font-size:11px}
  .article-meta{gap:5px;line-height:1.6}
  .article-meta span+span:before{margin:0 8px 2px 0}
  .article-hero h1{font-size:28px}
  .article-bottom-inner{padding:21px}
  .article-bottom .btn,.support-actions .btn{width:100%}
  .support-actions{width:100%;flex-direction:column}
  .support-inner h2{font-size:24px}
  .footer{padding-top:43px}
  .footer-grid{grid-template-columns:1fr;gap:25px}
  .footer-grid>div:first-child{grid-column:auto}
  .copyright{flex-direction:column;gap:4px}
}

/* roulang page: category1 */
:root{
  --bg:#f7f7f3;--paper:#fff;--ink:#202622;--muted:#68716a;--green:#177b68;--green-dark:#0e5d4e;
  --green-pale:#e6f1ed;--apricot:#f0e4ce;--line:#e1e5de;--footer:#26332e;--radius:18px;
  --shadow:0 14px 34px rgba(26,45,37,.08);--shadow-hover:0 19px 42px rgba(26,45,37,.14);
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
.container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
.section{padding:84px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:34px}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:13px;font-weight:700;letter-spacing:.08em}
.eyebrow:before{content:"";width:22px;height:2px;background:currentColor}
.section h2{font-size:30px;line-height:1.28;letter-spacing:-.03em;margin:7px 0 0}
.section-intro{max-width:600px;margin:0;color:var(--muted)}
.site-header{position:sticky;top:0;z-index:50;background:rgba(247,247,243,.96);border-bottom:1px solid rgba(225,229,222,.9)}
.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;font-weight:800;font-size:17px;letter-spacing:-.04em}
.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:16px;box-shadow:0 6px 12px rgba(23,123,104,.22)}
.nav-list{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-list a{position:relative;padding:10px 12px;color:#4e5851;font-size:14px;font-weight:600;transition:.2s}
.nav-list a:after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;transform:scaleX(0);background:var(--green);transition:.2s}
.nav-list a:hover,.nav-list a.active{color:var(--green)}
.nav-list a.active:after{transform:scaleX(1)}
.btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;min-height:46px;padding:11px 18px;border:1px solid transparent;border-radius:12px;font-size:14px;font-weight:700;transition:transform .2s,background .2s,border .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px)}
.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(23,123,104,.25);outline-offset:3px}
.btn-primary{background:var(--green);color:#fff;box-shadow:0 7px 14px rgba(23,123,104,.18)}
.btn-primary:hover{background:var(--green-dark);color:#fff}
.btn-light{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-light:hover{border-color:#b9d5cc;background:var(--green-pale)}
.header-download{margin-left:9px}
.menu-toggle{display:none;border:0;background:transparent;width:44px;height:44px;color:var(--ink);font-size:22px}
.page-hero{position:relative;overflow:hidden;padding:68px 0 74px;background:linear-gradient(135deg,#f7f7f3 0%,#f7f7f3 60%,#edf4f0 100%)}
.page-hero:before{content:"";position:absolute;width:530px;height:530px;right:-165px;top:-285px;border:1px solid rgba(23,123,104,.16);border-radius:50%}
.page-hero:after{content:"";position:absolute;width:210px;height:210px;left:45%;bottom:-155px;border:38px solid rgba(240,228,206,.53);border-radius:50%}
.breadcrumb{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:9px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:26px}
.breadcrumb span{color:#a0a8a1}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr .92fr;gap:66px;align-items:center}
.hero-copy h1{font-size:45px;line-height:1.18;letter-spacing:-.055em;max-width:650px;margin:14px 0 20px}
.hero-copy p{max-width:610px;color:var(--muted);font-size:17px;margin:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.download-panel{position:relative;background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:27px;box-shadow:var(--shadow);overflow:hidden}
.download-panel:before{content:"";position:absolute;width:150px;height:150px;right:-46px;top:-46px;border-radius:50%;background:var(--green-pale)}
.panel-top{position:relative;display:flex;justify-content:space-between;align-items:start;gap:15px}
.app-title{font-size:20px;font-weight:800;line-height:1.4;margin:0}
.app-meta{margin:3px 0 0;font-size:13px;color:var(--muted)}
.version-chip{flex-shrink:0;background:var(--apricot);padding:5px 10px;border-radius:20px;color:#705d3d;font-size:12px;font-weight:700}
.panel-device{position:relative;margin:23px 0 18px;padding:16px;background:#f4f8f5;border:1px solid #e2ece6;border-radius:16px;display:flex;gap:14px;align-items:center}
.device-symbol{width:51px;height:51px;border-radius:15px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:23px;font-weight:700}
.device-copy strong{display:block;font-size:14px}
.device-copy span{display:block;font-size:12px;color:var(--muted);line-height:1.55;margin-top:2px}
.platform-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.platform-btn{min-height:51px;border:1px solid var(--line);border-radius:13px;background:#fff;color:var(--ink);font-weight:700;transition:.2s}
.platform-btn:hover{color:var(--green);background:var(--green-pale);border-color:#b6d7cd}
.panel-note{display:flex;align-items:center;gap:8px;margin:15px 0 0;color:var(--muted);font-size:12px}
.dot{width:8px;height:8px;flex:0 0 auto;border-radius:50%;background:var(--green)}
.channel-strip{margin-top:-27px;position:relative;z-index:2}
.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);background:var(--paper);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 8px 22px rgba(26,45,37,.04)}
.channel-item{padding:20px 21px;border-right:1px solid var(--line);display:flex;gap:12px}
.channel-item:last-child{border-right:0}
.channel-icon{width:37px;height:37px;flex:0 0 auto;border-radius:12px;background:var(--green-pale);color:var(--green);display:grid;place-items:center;font-size:17px;font-weight:800}
.channel-item b{display:block;font-size:14px;line-height:1.45}
.channel-item span{display:block;font-size:12px;color:var(--muted);line-height:1.6;margin-top:2px}
.install-layout{display:grid;grid-template-columns:.83fr 1.17fr;gap:25px;align-items:stretch}
.step-list{padding:30px;background:var(--footer);border-radius:22px;color:#fff}
.step-list h3{font-size:22px;margin:0 0 21px}
.step-item{position:relative;display:grid;grid-template-columns:42px 1fr;gap:14px;padding:16px 0;border-top:1px solid rgba(255,255,255,.13)}
.step-number{width:32px;height:32px;border-radius:10px;background:rgba(240,228,206,.18);color:#f6e9d2;display:grid;place-items:center;font-weight:800;font-size:13px}
.step-item strong{display:block;font-size:15px}
.step-item p{margin:3px 0 0;color:#cad2cd;font-size:13px;line-height:1.65}
.system-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.system-card{padding:27px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);transition:.25s}
.system-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#c6d9d1}
.system-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:14px;background:var(--green-pale);color:var(--green);font-size:20px;font-weight:800}
.system-card h3{font-size:19px;margin:17px 0 7px}
.system-card p{margin:0 0 18px;color:var(--muted);font-size:14px;line-height:1.7}
.system-card .btn{width:100%}
.verify-section{background:#edf3ef}
.verify-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:40px;align-items:center}
.verify-copy h2{font-size:31px;margin:8px 0 15px;line-height:1.3;letter-spacing:-.035em}
.verify-copy>p{color:var(--muted);margin:0;max-width:610px}
.verify-list{display:grid;gap:12px;margin:25px 0 0;padding:0;list-style:none}
.verify-list li{display:flex;align-items:flex-start;gap:12px}
.verify-check{width:24px;height:24px;flex:0 0 auto;margin-top:3px;border-radius:50%;background:var(--green);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:800}
.verify-list strong{display:block;font-size:15px}
.verify-list p{margin:2px 0 0;font-size:13px;color:var(--muted);line-height:1.65}
.qr-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--shadow)}
.qr-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px}
.qr-top h3{font-size:19px;margin:0}
.qr-top p{font-size:13px;color:var(--muted);margin:3px 0 0}
.qr-body{display:flex;align-items:center;gap:22px;padding-top:20px;border-top:1px solid var(--line)}
.qr-code{width:116px;height:116px;flex:0 0 auto;padding:10px;background:
linear-gradient(90deg,#202622 10px,transparent 10px) 0 0/22px 22px,
linear-gradient(#202622 10px,transparent 10px) 0 0/22px 22px,
linear-gradient(45deg,#202622 25%,transparent 25%,transparent 75%,#202622 75%) 0 0/22px 22px,#fff;
border:8px solid #fff;box-shadow:0 0 0 1px var(--line);border-radius:8px}
.qr-note{font-size:13px;color:var(--muted);line-height:1.7}
.qr-note strong{color:var(--ink);display:block;font-size:14px;margin-bottom:3px}
.update-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px}
.update-intro{padding:31px;border-radius:20px;background:#fcfaf5;border:1px solid #eadfcd}
.update-intro h2{font-size:28px;margin:8px 0 14px;line-height:1.3}
.update-intro p{color:var(--muted);font-size:14px;margin:0}
.update-info{margin-top:22px;padding-top:20px;border-top:1px solid #e8dcc8;display:flex;gap:24px}
.update-info span{display:block;font-size:12px;color:var(--muted)}
.update-info strong{display:block;font-size:15px;color:var(--ink);margin-top:2px}
.version-list{background:#fff;border:1px solid var(--line);border-radius:20px;padding:9px 26px}
.version-item{display:grid;grid-template-columns:100px 1fr auto;gap:16px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}
.version-item:last-child{border-bottom:0}
.version-no{font-size:15px;font-weight:800;color:var(--green)}
.version-copy strong{display:block;font-size:14px}
.version-copy span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.version-date{font-size:12px;color:var(--muted);white-space:nowrap}
.notice-panel{border:1px solid #ead9bb;background:var(--apricot);padding:28px 30px;border-radius:20px;display:grid;grid-template-columns:auto 1fr;gap:17px;align-items:start}
.notice-mark{width:42px;height:42px;border-radius:14px;background:#fff7e8;color:#806438;display:grid;place-items:center;font-size:21px;font-weight:800}
.notice-panel h2{font-size:22px;margin:0 0 5px}
.notice-panel p{margin:0;color:#675f51;font-size:14px;max-width:900px}
.matrix-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
.matrix-card{display:block;min-height:156px;background:#fff;border:1px solid var(--line);border-radius:17px;padding:22px;transition:.24s}
.matrix-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bfd7cf}
.matrix-card .mini-icon{width:35px;height:35px;border-radius:11px;background:var(--green-pale);color:var(--green);display:grid;place-items:center;font-weight:800}
.matrix-card h3{font-size:17px;margin:14px 0 5px}
.matrix-card p{font-size:13px;color:var(--muted);line-height:1.65;margin:0}
.faq-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:58px}
.faq-side h2{font-size:30px;margin:8px 0 14px;line-height:1.3}
.faq-side p{color:var(--muted);margin:0}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:19px 0;border:0;background:transparent;text-align:left;color:var(--ink);font-weight:700;font-size:16px}
.faq-question span:first-child{display:flex;gap:14px;align-items:center}
.faq-index{font-size:12px;color:var(--green);font-weight:800}
.faq-symbol{width:26px;height:26px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:var(--green);font-size:18px;line-height:1;transition:.2s}
.faq-item.open .faq-symbol{background:var(--green);border-color:var(--green);color:#fff;transform:rotate(45deg)}
.faq-answer{display:none;padding:0 42px 19px;color:var(--muted);font-size:14px;line-height:1.8}
.faq-item.open .faq-answer{display:block}
.cta-section{padding:0 0 84px}
.cta-box{position:relative;overflow:hidden;background:var(--footer);border-radius:24px;padding:43px 48px;color:#fff;display:flex;justify-content:space-between;gap:30px;align-items:center}
.cta-box:after{content:"";position:absolute;right:-40px;bottom:-110px;width:285px;height:285px;border:1px solid rgba(255,255,255,.15);border-radius:50%}
.cta-box h2{position:relative;z-index:1;font-size:30px;line-height:1.3;margin:0 0 8px}
.cta-box p{position:relative;z-index:1;margin:0;color:#c5d0ca;font-size:14px}
.cta-actions{position:relative;z-index:1;display:flex;gap:11px;flex-shrink:0}
.footer{background:var(--footer);color:#edf2ee;padding:58px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.45fr .75fr .75fr;gap:48px;padding-bottom:39px}
.footer .brand{color:#fff}
.footer p{max-width:380px;color:#b8c4bd;font-size:13px;line-height:1.8;margin:18px 0 0}
.footer h3{font-size:14px;margin:5px 0 14px;color:#fff}
.footer-links{display:grid;gap:8px}
.footer-links a{color:#b8c4bd;font-size:13px;transition:.2s}
.footer-links a:hover{color:#fff;transform:translateX(3px)}
.copyright{padding-top:19px;border-top:1px solid rgba(255,255,255,.13);display:flex;justify-content:space-between;gap:20px;color:#9eaca4;font-size:12px}
@media(max-width:1024px){
  .hero-grid,.verify-layout{grid-template-columns:1fr;gap:38px}
  .hero-copy h1{font-size:41px}
  .download-panel{max-width:680px}
  .channel-grid{grid-template-columns:1fr 1fr}
  .channel-item:nth-child(2){border-right:0}
  .channel-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .install-layout,.faq-layout{grid-template-columns:1fr;gap:26px}
  .matrix-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .container{width:min(calc(100% - 32px),var(--container))}
  .section{padding:58px 0}
  .site-header{position:sticky}
  .nav-wrap{height:68px}
  .nav-list{display:none;position:absolute;left:0;right:0;top:68px;padding:15px 16px 20px;background:var(--bg);border-bottom:1px solid var(--line);box-shadow:0 12px 22px rgba(26,45,37,.07);flex-direction:column;align-items:stretch}
  .nav-list.show{display:flex}
  .nav-list a{padding:12px 10px}
  .nav-list a:after{left:10px;right:auto;width:28px}
  .header-download{display:none}
  .menu-toggle{display:grid;place-items:center;margin-left:auto}
  .mobile-download{display:inline-flex}
  .page-hero{padding:46px 0 55px}
  .hero-copy h1{font-size:33px}
  .hero-copy p{font-size:16px}
  .section-head{display:block;margin-bottom:26px}
  .section-intro{margin-top:14px}
  .section h2{font-size:27px}
  .system-grid,.update-grid{grid-template-columns:1fr}
  .update-intro{padding:27px}
  .version-list{padding:7px 20px}
  .faq-layout{gap:19px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .footer-grid>div:first-child{grid-column:1/-1}
}
@media(max-width:520px){
  body{font-size:15px}
  .brand{font-size:15px}
  .brand-mark{width:32px;height:32px}
  .page-hero{padding-top:35px}
  .hero-copy h1{font-size:30px}
  .hero-actions,.cta-actions{display:grid;grid-template-columns:1fr}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .download-panel{padding:21px}
  .platform-row{grid-template-columns:1fr}
  .channel-grid,.matrix-grid{grid-template-columns:1fr}
  .channel-item,.channel-item:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}
  .channel-item:last-child{border-bottom:0}
  .system-grid{gap:13px}
  .system-card{padding:23px}
  .step-list{padding:24px}
  .qr-card{padding:23px}
  .qr-body{align-items:flex-start}
  .qr-code{width:98px;height:98px}
  .update-info{gap:17px}
  .version-item{grid-template-columns:1fr auto;gap:6px 12px}
  .version-copy{grid-column:1/-1;grid-row:2}
  .version-date{grid-column:2;grid-row:1}
  .notice-panel{padding:22px;gap:13px}
  .faq-question{font-size:15px}
  .faq-answer{padding-left:34px}
  .cta-box{padding:31px 25px;display:block}
  .cta-box h2{font-size:26px}
  .cta-actions{margin-top:21px}
  .footer{padding-top:46px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-grid>div:first-child{grid-column:auto}
  .copyright{display:grid;gap:4px}
}

/* roulang page: category2 */
:root{
      --bg:#f7f7f3;--paper:#fff;--ink:#202622;--muted:#68716a;--green:#177b68;--green-dark:#0e5d4e;
      --green-pale:#e6f1ed;--apricot:#f0e4ce;--line:#e1e5de;--footer:#26332e;--radius:18px;
      --shadow:0 14px 34px rgba(26,45,37,.08);--shadow-hover:0 19px 42px rgba(26,45,37,.14);--container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(247,247,243,.96);border-bottom:1px solid rgba(225,229,222,.9)}
    .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;font-weight:800;font-size:17px;letter-spacing:-.04em}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:16px;box-shadow:0 6px 12px rgba(23,123,104,.22)}
    .nav-list{display:flex;align-items:center;gap:4px;margin-left:auto}
    .nav-list a{position:relative;padding:10px 12px;color:#4e5851;font-size:14px;font-weight:600;transition:.2s}
    .nav-list a:after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;transform:scaleX(0);background:var(--green);transition:.2s}
    .nav-list a:hover,.nav-list a.active{color:var(--green)}
    .nav-list a.active:after{transform:scaleX(1)}
    .btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;min-height:46px;padding:11px 18px;border:1px solid transparent;border-radius:12px;font-size:14px;font-weight:700;transition:transform .2s,background .2s,border .2s,box-shadow .2s}
    .btn:hover{transform:translateY(-2px)}
    .btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(23,123,104,.25);outline-offset:3px}
    .btn-primary{background:var(--green);color:#fff;box-shadow:0 7px 14px rgba(23,123,104,.18)}
    .btn-primary:hover{background:var(--green-dark)}
    .btn-light{background:#fff;border-color:var(--line);color:var(--ink)}
    .btn-light:hover{border-color:#b9d5cc;background:var(--green-pale)}
    .header-download{margin-left:9px}
    .menu-toggle{display:none;border:0;background:transparent;width:44px;height:44px;color:var(--ink);font-size:22px}
    .section{padding:82px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:13px;font-weight:700;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:currentColor}
    h1,h2,h3,p{margin-top:0}
    .section h2{font-size:30px;line-height:1.3;letter-spacing:-.03em;margin:7px 0 0}
    .section-intro{max-width:580px;margin:0;color:var(--muted)}
    .page-hero{position:relative;overflow:hidden;padding:74px 0 80px;background:linear-gradient(135deg,#f7f7f3 0%,#f7f7f3 62%,#eaf3ef 100%)}
    .page-hero:before{content:"";position:absolute;width:510px;height:510px;right:-145px;top:-290px;border:1px solid rgba(23,123,104,.16);border-radius:50%}
    .page-hero:after{content:"";position:absolute;width:260px;height:260px;left:7%;bottom:-185px;border:34px solid rgba(240,228,206,.55);border-radius:50%}
    .breadcrumb{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:13px;margin-bottom:27px}
    .breadcrumb span{color:#9aa19b}
    .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.12fr .88fr;gap:54px;align-items:end}
    .page-hero h1{max-width:740px;margin:14px 0 19px;font-size:46px;line-height:1.18;letter-spacing:-.055em}
    .hero-text{max-width:670px;color:var(--muted);font-size:17px;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:29px}
    .news-summary{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:var(--shadow)}
    .summary-label{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:13px;padding-bottom:14px;border-bottom:1px solid var(--line)}
    .summary-label strong{color:var(--green);font-size:14px}
    .summary-list{list-style:none;padding:0;margin:15px 0 0}
    .summary-list li{display:flex;align-items:flex-start;gap:11px;padding:10px 0;border-bottom:1px dashed #e5e9e4;font-size:14px;line-height:1.55}
    .summary-list li:last-child{border:0;padding-bottom:0}
    .summary-dot{width:8px;height:8px;border-radius:50%;background:var(--green);margin-top:7px;flex:0 0 auto}
    .channel-section{padding-top:48px}
    .channel-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr 1fr;gap:0;background:var(--paper);border:1px solid var(--line);border-radius:18px;overflow:hidden}
    .channel-item{padding:23px 24px;border-right:1px solid var(--line);min-height:143px;transition:.2s}
    .channel-item:last-child{border:0}
    .channel-item:hover{background:#fbfcfa}
    .channel-no{color:var(--green);font-size:13px;font-weight:800}
    .channel-item h3{font-size:17px;margin:8px 0 5px}
    .channel-item p{color:var(--muted);font-size:13px;line-height:1.65;margin:0}
    .featured-section{padding-top:88px}
    .featured-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}
    .feature-panel{position:relative;min-height:344px;background:var(--footer);color:#fff;padding:38px;border-radius:22px;overflow:hidden;display:flex;flex-direction:column;justify-content:flex-end}
    .feature-panel:before{content:"";position:absolute;width:290px;height:290px;border:1px solid rgba(255,255,255,.16);border-radius:50%;right:-80px;top:-120px}
    .feature-panel:after{content:"";position:absolute;width:100px;height:100px;border-radius:50%;right:54px;bottom:47px;background:rgba(23,123,104,.72)}
    .feature-panel>*{position:relative;z-index:1}
    .tag{display:inline-flex;align-items:center;width:max-content;padding:4px 10px;border-radius:18px;background:var(--apricot);color:#705d3d;font-size:12px;font-weight:700}
    .feature-panel .tag{background:rgba(240,228,206,.92)}
    .feature-panel h2{font-size:31px;max-width:590px;line-height:1.3;letter-spacing:-.035em;margin:17px 0 13px}
    .feature-panel p{max-width:560px;margin:0;color:#d4ddd7;font-size:15px}
    .feature-panel .btn{width:max-content;margin-top:25px}
    .info-stack{display:grid;gap:20px}
    .info-card{display:flex;flex-direction:column;justify-content:space-between;min-height:162px;padding:24px 25px;background:var(--paper);border:1px solid var(--line);border-radius:18px;transition:.25s}
    .info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#c5d8d0}
    .info-card-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
    .info-card time{font-size:13px;color:var(--muted)}
    .info-card h3{font-size:18px;line-height:1.45;margin:16px 0 0}
    .channels{background:#eef3ef}
    .matrix{display:grid;grid-template-columns:1.12fr .88fr;gap:18px}
    .matrix-main{padding:31px;background:var(--paper);border:1px solid var(--line);border-radius:20px}
    .matrix-main h3{font-size:23px;margin:11px 0}
    .matrix-main p{color:var(--muted);margin:0;max-width:610px}
    .matrix-line{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:25px}
    .matrix-step{padding:17px;background:#f8faf8;border:1px solid #e4ebe6;border-radius:14px}
    .matrix-step b{display:block;color:var(--green);font-size:13px;margin-bottom:6px}
    .matrix-step span{font-size:14px;font-weight:700;line-height:1.5}
    .matrix-side{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .matrix-card{padding:23px;background:#fff;border:1px solid var(--line);border-radius:18px;transition:.25s}
    .matrix-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .matrix-card:nth-child(2){background:#fcfaf5}
    .matrix-icon{display:grid;place-items:center;width:41px;height:41px;background:var(--green-pale);color:var(--green);border-radius:13px;font-size:19px;font-weight:800}
    .matrix-card h3{font-size:17px;margin:17px 0 7px}
    .matrix-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.65}
    .updates-section{padding-bottom:58px}
    .updates-box{background:var(--paper);border:1px solid var(--line);border-radius:20px;overflow:hidden}
    .update-row{display:grid;grid-template-columns:115px 1fr auto;align-items:center;gap:25px;padding:23px 28px;border-bottom:1px solid var(--line);transition:.2s}
    .update-row:last-child{border:0}
    .update-row:hover{background:#fbfcfa}
    .update-date{color:var(--green);font-size:14px;font-weight:800}
    .update-content h3{font-size:17px;margin:0 0 4px}
    .update-content p{color:var(--muted);font-size:14px;margin:0}
    .update-state{padding:4px 10px;border:1px solid #c9dfd7;border-radius:20px;background:var(--green-pale);color:var(--green-dark);font-size:12px;font-weight:700;white-space:nowrap}
    .list-section{background:#f0f4f1}
    .list-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:28px}
    .list-heading h2{font-size:30px;line-height:1.3;letter-spacing:-.03em;margin:7px 0 0}
    .news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:17px}
    .news-item{display:flex;flex-direction:column;min-height:220px;padding:25px;background:var(--paper);border:1px solid var(--line);border-radius:18px;transition:.25s}
    .news-item:hover{transform:translateY(-4px);border-color:#c6dbd2;box-shadow:var(--shadow-hover)}
    .news-item-meta{display:flex;align-items:center;justify-content:space-between;gap:12px}
    .news-item time{font-size:13px;color:var(--muted)}
    .news-item h3{font-size:19px;line-height:1.45;margin:18px 0 9px}
    .news-item p{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;color:var(--muted);font-size:14px;line-height:1.7;margin:0}
    .read-link{display:inline-flex;align-items:center;gap:7px;margin-top:auto;padding-top:19px;color:var(--green);font-size:14px;font-weight:800}
    .read-link:after{content:"→";transition:transform .2s}
    .news-item:hover .read-link:after{transform:translateX(4px)}
    .empty-state{padding:60px 25px;text-align:center;background:var(--paper);border:1px dashed #c9d7d0;border-radius:18px;color:var(--muted)}
    .empty-icon{display:grid;place-items:center;width:48px;height:48px;margin:0 auto 15px;border-radius:14px;background:var(--green-pale);color:var(--green);font-size:22px}
    .empty-state p{margin:0;font-size:15px}
    .faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}
    .faq-copy{position:sticky;top:105px}
    .faq-copy h2{font-size:32px;line-height:1.32;letter-spacing:-.04em;margin:9px 0 14px}
    .faq-copy p{color:var(--muted);margin:0}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;padding:21px 0;display:flex;align-items:center;gap:16px;border:0;background:transparent;color:var(--ink);text-align:left;font-size:17px;font-weight:700}
    .faq-no{color:var(--green);font-size:13px;font-weight:800}
    .faq-plus{margin-left:auto;width:27px;height:27px;border-radius:50%;background:var(--green-pale);color:var(--green);display:grid;place-items:center;font-size:20px;font-weight:400;line-height:1;transition:.2s}
    .faq-item.open .faq-plus{transform:rotate(45deg);background:var(--green);color:#fff}
    .faq-answer{display:none;padding:0 43px 22px;color:var(--muted);font-size:15px;line-height:1.8}
    .faq-item.open .faq-answer{display:block}
    .support-section{padding-top:35px}
    .support-card{position:relative;overflow:hidden;display:grid;grid-template-columns:1fr auto;gap:35px;align-items:center;padding:41px 46px;background:var(--footer);border-radius:22px;color:#fff}
    .support-card:after{content:"";position:absolute;width:280px;height:280px;right:-98px;bottom:-160px;border:40px solid rgba(23,123,104,.45);border-radius:50%}
    .support-card>*{position:relative;z-index:1}
    .support-card h2{font-size:30px;letter-spacing:-.04em;margin:9px 0 10px}
    .support-card p{margin:0;color:#ced9d3;max-width:650px}
    .support-card .btn-light{white-space:nowrap}
    .footer{margin-top:84px;padding:62px 0 24px;background:var(--footer);color:#eef2ee}
    .footer-grid{display:grid;grid-template-columns:1.35fr .72fr .72fr;gap:60px;padding-bottom:43px}
    .footer .brand{color:#fff}
    .footer p{max-width:365px;margin:18px 0 0;color:#b7c3bc;font-size:14px;line-height:1.75}
    .footer h3{margin:0 0 15px;font-size:14px;color:#fff}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:#b7c3bc;font-size:14px;transition:.2s}
    .footer-links a:hover{color:#fff;padding-left:3px}
    .copyright{display:flex;justify-content:space-between;gap:16px;padding-top:21px;border-top:1px solid rgba(255,255,255,.13);color:#aab8b0;font-size:13px}
    @media (max-width:1024px){
      .hero-grid,.faq-wrap{grid-template-columns:1fr;gap:36px}
      .page-hero h1{font-size:41px}
      .faq-copy{position:static}
      .featured-layout{grid-template-columns:1fr}
      .channel-grid{grid-template-columns:1fr 1fr}
      .channel-item:nth-child(2){border-right:0}
      .channel-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .matrix{grid-template-columns:1fr}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .nav-wrap{height:68px}
      .nav-list{display:none;position:absolute;top:68px;left:0;right:0;margin:0;padding:13px 16px 18px;background:var(--bg);border-bottom:1px solid var(--line);box-shadow:0 14px 20px rgba(26,45,37,.08);flex-direction:column;align-items:stretch}
      .nav-list.open{display:flex}
      .nav-list a{padding:12px}
      .nav-list a:after{left:12px;right:auto;width:22px}
      .header-download{margin-left:auto;padding:9px 12px;min-height:42px;font-size:13px}
      .menu-toggle{display:block}
      .section{padding:58px 0}
      .section-head,.list-heading{display:block;margin-bottom:25px}
      .section-intro{margin-top:14px}
      .page-hero{padding:53px 0 57px}
      .page-hero h1{font-size:34px}
      .hero-text{font-size:16px}
      .news-summary{padding:21px}
      .channel-grid{grid-template-columns:1fr}
      .channel-item,.channel-item:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}
      .channel-item:last-child{border-bottom:0}
      .feature-panel{min-height:315px;padding:28px}
      .feature-panel h2{font-size:26px}
      .matrix-line,.matrix-side,.news-list{grid-template-columns:1fr}
      .update-row{grid-template-columns:1fr;gap:8px;padding:21px}
      .update-state{width:max-content}
      .support-card{grid-template-columns:1fr;padding:32px 27px;gap:23px}
      .support-card .btn{width:100%}
      .footer{margin-top:58px;padding-top:48px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
      .footer-grid>div:first-child{grid-column:span 2}
    }
    @media (max-width:520px){
      body{font-size:15px}
      .brand{font-size:15px}
      .brand-mark{width:32px;height:32px}
      .header-download{font-size:0;width:42px;padding:0;border-radius:11px}
      .header-download:before{content:"↓";font-size:20px}
      .page-hero h1{font-size:30px;letter-spacing:-.045em}
      .hero-actions{display:grid;grid-template-columns:1fr}
      .hero-actions .btn{width:100%}
      .feature-panel{padding:24px;min-height:340px}
      .info-card{min-height:150px}
      .section h2,.list-heading h2,.faq-copy h2{font-size:27px}
      .news-item{min-height:205px;padding:21px}
      .faq-question{font-size:16px;padding:18px 0}
      .faq-answer{padding-left:30px;font-size:14px}
      .support-card h2{font-size:26px}
      .footer-grid{grid-template-columns:1fr;gap:28px}
      .footer-grid>div:first-child{grid-column:auto}
      .copyright{display:grid;gap:4px}
    }

/* roulang page: category3 */
:root{
      --bg:#f7f7f3;--paper:#fff;--ink:#202622;--muted:#68716a;--green:#177b68;--green-dark:#0e5d4e;
      --green-pale:#e6f1ed;--apricot:#f0e4ce;--line:#e1e5de;--footer:#26332e;--radius:18px;
      --shadow:0 14px 34px rgba(26,45,37,.08);--shadow-hover:0 19px 42px rgba(26,45,37,.14);--container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(23,123,104,.25);outline-offset:3px}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(247,247,243,.97);border-bottom:1px solid rgba(225,229,222,.9)}
    .nav-wrap{height:76px;display:flex;align-items:center;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;font-size:17px;font-weight:800;letter-spacing:-.04em}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:16px;box-shadow:0 6px 12px rgba(23,123,104,.22)}
    .nav-list{display:flex;align-items:center;gap:4px;margin-left:auto}
    .nav-list a{position:relative;padding:10px 12px;color:#4e5851;font-size:14px;font-weight:600;transition:.2s}
    .nav-list a:after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;transform:scaleX(0);background:var(--green);transition:.2s}
    .nav-list a:hover,.nav-list a.active{color:var(--green)}
    .nav-list a.active:after{transform:scaleX(1)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:11px 18px;border:1px solid transparent;border-radius:12px;font-size:14px;font-weight:700;transition:.2s}
    .btn:hover{transform:translateY(-2px)}
    .btn-primary{background:var(--green);color:#fff;box-shadow:0 7px 14px rgba(23,123,104,.18)}
    .btn-primary:hover{background:var(--green-dark);color:#fff}
    .btn-light{background:#fff;border-color:var(--line);color:var(--ink)}
    .btn-light:hover{background:var(--green-pale);border-color:#b9d5cc}
    .header-download{margin-left:8px}
    .menu-toggle{display:none;width:44px;height:44px;border:0;background:transparent;color:var(--ink);font-size:23px}
    .hero{position:relative;overflow:hidden;padding:86px 0 78px;background:linear-gradient(135deg,#f7f7f3 0%,#f7f7f3 63%,#edf4f0 100%)}
    .hero:before{content:"";position:absolute;width:580px;height:580px;right:-190px;top:-260px;border:1px solid rgba(23,123,104,.16);border-radius:50%}
    .hero:after{content:"";position:absolute;width:230px;height:230px;left:46%;bottom:-165px;border:40px solid rgba(240,228,206,.52);border-radius:50%}
    .hero-inner{position:relative;z-index:1;max-width:840px}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:13px;font-weight:700;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:currentColor}
    h1{font-size:48px;line-height:1.18;letter-spacing:-.055em;margin:17px 0 20px}
    .hero p{max-width:700px;color:var(--muted);font-size:17px;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:29px}
    .section{padding:82px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:32px}
    .section h2{font-size:30px;line-height:1.3;letter-spacing:-.035em;margin:7px 0 0}
    .section-intro{max-width:590px;margin:0;color:var(--muted)}
    .guide-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .guide-card,.topic-card,.step-panel,.support-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s}
    .guide-card:hover,.topic-card:hover,.support-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#c2d9d0}
    .guide-card.large{background:#edf5f1;padding:34px}
    .icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:var(--green);color:#fff;font-weight:800;font-size:18px}
    h3{font-size:20px;line-height:1.35;margin:17px 0 8px}
    .guide-card p,.topic-card p,.support-card p{color:var(--muted);margin:0}
    .mini-list{display:grid;gap:13px;margin:22px 0 0;padding:0;list-style:none}
    .mini-list li{display:flex;gap:10px;align-items:flex-start;color:#465149;font-size:14px}
    .mini-list li:before{content:"✓";color:var(--green);font-weight:800}
    .topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
    .topic-card{min-height:190px;padding:23px}
    .topic-no{color:var(--green);font-size:13px;font-weight:800}
    .steps-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:20px;align-items:stretch}
    .step-panel{background:var(--footer);color:#fff;padding:34px}
    .step-panel p{color:#c2cec7}
    .step-list{display:grid;gap:21px;margin-top:25px}
    .step-item{display:flex;gap:15px;align-items:flex-start}
    .step-number{width:31px;height:31px;flex:0 0 31px;display:grid;place-items:center;border-radius:50%;background:var(--apricot);color:#705d3d;font-weight:800;font-size:13px}
    .step-item strong{display:block;margin-bottom:2px}
    .step-item span{display:block;color:var(--muted);font-size:14px}
    .process-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:29px}
    .process-card h3{margin-top:0}
    .process-line{height:1px;background:var(--line);margin:22px 0}
    .notice-band{background:var(--apricot);border-radius:20px;padding:29px 34px;display:grid;grid-template-columns:1fr 1.4fr;gap:30px;align-items:center}
    .notice-band h2{font-size:25px;margin:0}
    .notice-band p{margin:0;color:#655a48}
    .notice-points{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .notice-points span{background:rgba(255,255,255,.48);border:1px solid rgba(112,93,61,.12);border-radius:11px;padding:10px 13px;color:#554b3b;font-size:14px}
    .faq-list{max-width:850px;margin:0 auto;border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 4px;border:0;background:transparent;text-align:left;color:var(--ink);font-weight:700}
    .faq-question span:last-child{color:var(--green);font-size:24px;font-weight:400;transition:.2s}
    .faq-answer{display:none;color:var(--muted);font-size:15px;padding:0 40px 20px 4px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta{background:var(--footer);color:#fff;border-radius:22px;padding:38px 42px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta h2{margin:0 0 6px;font-size:28px}
    .cta p{margin:0;color:#c2cec7}
    .footer{background:var(--footer);color:#eef2ed;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px}
    .footer .brand{color:#fff}
    .footer p{max-width:400px;color:#b5c2ba;font-size:14px;margin:17px 0 0}
    .footer h3{font-size:15px;margin:0 0 15px;color:#fff}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:#b5c2ba;font-size:14px;transition:.2s}
    .footer-links a:hover{color:#fff;transform:translateX(3px)}
    .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding-top:18px;color:#9eada4;font-size:13px}
    @media(max-width:1024px){
      .hero{padding:70px 0}.hero-grid,.steps-wrap{grid-template-columns:1fr}.topic-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .nav-wrap{height:68px}.menu-toggle{display:block;margin-left:auto}.nav-list{display:none;position:absolute;left:16px;right:16px;top:76px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);align-items:stretch;flex-direction:column}
      .nav-list.show{display:flex}.nav-list a{padding:12px}.header-download{display:none}
      h1{font-size:34px}.section{padding:60px 0}.section-head{display:block}.section-intro{margin-top:12px}.guide-grid{grid-template-columns:1fr}.notice-band{grid-template-columns:1fr;padding:27px}.cta{display:block;padding:30px}.cta .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-grid>div:first-child{grid-column:1/-1}
    }
    @media(max-width:520px){
      .hero{padding:58px 0}.hero-actions,.hero-actions .btn{width:100%}.topic-grid,.notice-points{grid-template-columns:1fr}.guide-card,.topic-card,.process-card,.step-panel{padding:23px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.copyright{display:block}.copyright span{display:block;margin-top:6px}
    }

/* roulang page: category4 */
:root{
      --bg:#f7f7f3;--paper:#fff;--ink:#202622;--muted:#68716a;--green:#177b68;--green-dark:#0e5d4e;
      --green-pale:#e6f1ed;--apricot:#f0e4ce;--line:#e1e5de;--footer:#26332e;--radius:18px;
      --shadow:0 14px 34px rgba(26,45,37,.08);--shadow-hover:0 19px 42px rgba(26,45,37,.14);
      --container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img{max-width:100%;display:block}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .section{padding:84px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:13px;font-weight:700;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:currentColor}
    h1,h2,h3,p{overflow-wrap:anywhere}
    .section h2{font-size:30px;line-height:1.28;letter-spacing:-.03em;margin:7px 0 0}
    .section-intro{max-width:620px;margin:0;color:var(--muted)}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(247,247,243,.96);border-bottom:1px solid rgba(225,229,222,.9)}
    .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;font-weight:800;font-size:17px;letter-spacing:-.04em}
    .brand-mark{width:34px;height:34px;border-radius:11px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:16px;box-shadow:0 6px 12px rgba(23,123,104,.22)}
    .nav-list{display:flex;align-items:center;gap:4px;margin-left:auto}
    .nav-list a{position:relative;padding:10px 12px;color:#4e5851;font-size:14px;font-weight:600;transition:.2s}
    .nav-list a:after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;transform:scaleX(0);background:var(--green);transition:.2s}
    .nav-list a:hover,.nav-list a.active{color:var(--green)}
    .nav-list a.active:after{transform:scaleX(1)}
    .btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;min-height:46px;padding:11px 18px;border:1px solid transparent;border-radius:12px;font-size:14px;font-weight:700;transition:transform .2s,background .2s,border .2s,box-shadow .2s}
    .btn:hover{transform:translateY(-2px)}
    .btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(23,123,104,.25);outline-offset:3px}
    .btn-primary{background:var(--green);color:#fff;box-shadow:0 7px 14px rgba(23,123,104,.18)}
    .btn-primary:hover{background:var(--green-dark)}
    .btn-light{background:#fff;border-color:var(--line);color:var(--ink)}
    .btn-light:hover{border-color:#b9d5cc;background:var(--green-pale)}
    .header-download{margin-left:9px}
    .menu-toggle{display:none;border:0;background:transparent;width:44px;height:44px;color:var(--ink);font-size:22px}
    .hero{position:relative;overflow:hidden;padding:86px 0 74px;background:linear-gradient(135deg,#f7f7f3 0%,#f7f7f3 60%,#edf4f0 100%)}
    .hero:before{content:"";position:absolute;width:570px;height:570px;right:-190px;top:-260px;border:1px solid rgba(23,123,104,.16);border-radius:50%}
    .hero:after{content:"";position:absolute;width:220px;height:220px;left:45%;bottom:-150px;border:38px solid rgba(240,228,206,.5);border-radius:50%}
    .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
    .hero h1{font-size:46px;line-height:1.18;letter-spacing:-.055em;max-width:680px;margin:15px 0 21px}
    .hero p{max-width:650px;color:var(--muted);font-size:17px;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
    .hero-panel{background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:var(--shadow)}
    .panel-label{font-size:13px;color:var(--green);font-weight:700}
    .panel-title{font-size:25px;font-weight:800;line-height:1.35;margin:9px 0 18px}
    .notice-summary{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .summary-item{padding:17px;border:1px solid var(--line);border-radius:14px;background:#fcfdfb}
    .summary-item strong{display:block;font-size:17px}
    .summary-item span{display:block;color:var(--muted);font-size:13px;line-height:1.55;margin-top:4px}
    .tag{display:inline-flex;align-items:center;width:max-content;padding:4px 10px;border-radius:20px;background:var(--apricot);color:#705d3d;font-size:12px;font-weight:700}
    .notice-grid{display:grid;grid-template-columns:repeat(4,1fr);background:var(--paper);border:1px solid var(--line);border-radius:16px;overflow:hidden}
    .notice-item{padding:20px 22px;border-right:1px solid var(--line);display:flex;gap:12px}
    .notice-item:last-child{border:0}
    .notice-item b{display:block;font-size:14px}
    .notice-item span{display:block;font-size:12px;color:var(--muted);line-height:1.55;margin-top:2px}
    .notice-icon{width:31px;height:31px;display:grid;place-items:center;border-radius:10px;background:var(--green-pale);color:var(--green);font-weight:800;flex-shrink:0}
    .timeline{position:relative;max-width:900px;margin:0 auto}
    .timeline:before{content:"";position:absolute;left:89px;top:8px;bottom:8px;width:1px;background:#c9d8d1}
    .timeline-item{display:grid;grid-template-columns:180px 1fr;gap:34px;position:relative;padding:0 0 34px}
    .timeline-date{color:var(--muted);font-size:14px;padding-top:3px;text-align:right}
    .timeline-dot{position:absolute;left:83px;top:5px;width:13px;height:13px;border:3px solid var(--bg);border-radius:50%;background:var(--green);box-shadow:0 0 0 1px var(--green)}
    .timeline-content{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 25px;transition:.25s}
    .timeline-content:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .timeline-content h3{font-size:19px;margin:10px 0 6px}
    .timeline-content p{color:var(--muted);margin:0;font-size:14px}
    .split{display:grid;grid-template-columns:.85fr 1.15fr;gap:22px;align-items:stretch}
    .info-card{border:1px solid var(--line);background:#fff;border-radius:var(--radius);padding:30px}
    .info-card.soft{background:var(--green-pale)}
    .info-card h3{font-size:22px;margin:13px 0 9px}
    .info-card p{color:var(--muted);margin:0}
    .check-list{list-style:none;padding:0;margin:22px 0 0}
    .check-list li{display:flex;gap:11px;padding:12px 0;border-bottom:1px solid rgba(225,229,222,.9);font-size:14px}
    .check-list li:last-child{border-bottom:0}
    .check-list b{color:var(--green)}
    .faq-wrap{max-width:900px;margin:auto}
    .faq-item{border-top:1px solid var(--line)}
    .faq-item:last-child{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;border:0;background:transparent;text-align:left;padding:21px 4px;color:var(--ink);font-weight:700}
    .faq-question span:last-child{font-size:22px;color:var(--green);transition:.2s}
    .faq-answer{display:none;color:var(--muted);font-size:15px;padding:0 42px 21px 4px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta{padding:54px 0;background:var(--footer);color:#f7f7f3}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta h2{margin:0 0 8px;font-size:29px}
    .cta p{color:#b8c5be;margin:0}
    .footer{background:var(--footer);color:#eaf0ec;padding:0 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px;padding:58px 0 42px;border-top:1px solid rgba(218,232,223,.18)}
    .footer .brand{color:#fff}
    .footer p{max-width:390px;color:#aebbb4;font-size:14px;margin:18px 0 0}
    .footer h3{font-size:14px;margin:3px 0 16px;color:#fff}
    .footer-links{display:flex;flex-direction:column;gap:9px}
    .footer-links a{color:#aebbb4;font-size:14px;transition:.2s}
    .footer-links a:hover{color:#fff;padding-left:3px}
    .copyright{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid rgba(218,232,223,.14);color:#93a39a;font-size:12px}
    @media(max-width:1024px){
      .hero-grid{grid-template-columns:1fr;gap:35px}.hero-panel{max-width:680px}.notice-grid{grid-template-columns:repeat(2,1fr)}
      .notice-item:nth-child(2){border-right:0}.notice-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}.nav-wrap{height:68px}.header-download{margin-left:auto;min-height:42px;padding:9px 12px;font-size:13px}
      .menu-toggle{display:block}.nav-list{display:none;position:absolute;left:16px;right:16px;top:73px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-list.show{display:flex}.nav-list a{padding:13px 14px}.nav-list a:after{left:14px;right:auto;width:24px;bottom:5px}
      .hero{padding:62px 0 55px}.hero h1{font-size:34px}.hero p{font-size:16px}.section{padding:60px 0}.section-head{display:block;margin-bottom:25px}.section-intro{margin-top:12px}
      .notice-grid{grid-template-columns:1fr}.notice-item{border-right:0!important;border-bottom:1px solid var(--line)!important}.notice-item:last-child{border-bottom:0!important}
      .split{grid-template-columns:1fr}.timeline:before{left:7px}.timeline-item{display:block;padding-left:32px}.timeline-date{text-align:left;padding:0 0 8px}.timeline-dot{left:1px}
      .cta-inner{display:block}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr;gap:28px;padding-top:42px}.copyright{display:block}.copyright span{display:block;margin-top:6px}
    }
    @media(max-width:520px){
      .hero h1{font-size:30px}.hero-actions,.hero-actions .btn{width:100%}.hero-panel{padding:22px}.notice-summary{grid-template-columns:1fr}
      .panel-title{font-size:22px}.info-card{padding:23px}.cta h2{font-size:25px}.download-card{padding:20px}
    }