/* roulang page: index */
:root{--lime:#b9ed32;--lime-deep:#91bd11;--ink:#20231e;--ink2:#343930;--paper:#fffdf8;--sand:#f3f0e8;--sand2:#ebe6da;--muted:#73776d;--line:#ded9cd;--orange:#ee9d62;--orange-bg:#fff0e4;--dark:#1f251f;--dark2:#2c352b;--radius:18px;--radius-sm:12px;--shadow:0 16px 38px rgba(34,38,29,.08);--max:1200px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.7}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{max-width:100%;display:block}.container{width:min(var(--max),calc(100% - 48px));margin:auto}.site-header{position:sticky;top:0;z-index:40;background:rgba(255,253,248,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.nav-wrap{height:76px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:10px;min-width:236px}.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--ink);color:var(--lime);display:grid;place-items:center;font-size:22px;font-weight:900;box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}.brand strong{display:block;font-size:15px;line-height:1.15;letter-spacing:-.4px}.brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:1.1px;text-transform:uppercase}.nav{display:flex;align-items:center;gap:3px;margin-left:auto}.nav a{padding:10px 12px;border-radius:9px;color:#5c6258;font-size:14px;font-weight:700;white-space:nowrap;position:relative;transition:.2s}.nav a:hover,.nav a.active{color:var(--ink);background:#eff8cf}.nav a.active:after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--lime-deep);border-radius:2px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 19px;border:1px solid transparent;border-radius:11px;font-weight:800;transition:transform .2s,background .2s,box-shadow .2s}.btn:hover{transform:translateY(-2px);box-shadow:0 10px 20px rgba(30,37,19,.12)}.btn:focus-visible,.nav a:focus-visible,.faq-q:focus-visible{outline:3px solid rgba(185,237,50,.58);outline-offset:3px}.btn-primary{background:var(--lime);color:#1f2913}.btn-primary:hover{background:#c8f54f}.btn-outline{border-color:#c8c5ba;background:transparent;color:var(--ink)}.btn-outline:hover{background:#fff}.nav-download{margin-left:4px;white-space:nowrap}.menu-btn{display:none;border:0;background:var(--sand);width:42px;height:42px;border-radius:10px;font-size:20px}
main section{padding:82px 0}.eyebrow{display:inline-flex;align-items:center;gap:7px;color:#5e6e24;font-size:12px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.eyebrow:before{content:"";width:22px;height:2px;background:var(--lime-deep)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(36px,4vw,52px);line-height:1.16;letter-spacing:-2px;margin:16px 0 20px}h2{font-size:clamp(28px,3vw,36px);line-height:1.24;letter-spacing:-1.2px;margin-bottom:12px}h3{font-size:19px;line-height:1.4;margin-bottom:7px}.lead{font-size:17px;color:#60655c;max-width:620px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:30px}.section-head p{color:var(--muted);margin:0;max-width:540px}.tag{display:inline-flex;align-items:center;min-height:26px;padding:2px 9px;border-radius:99px;background:#edf7cd;color:#596a1f;font-size:12px;font-weight:800}.tag.orange{background:var(--orange-bg);color:#a45e2f}.hero{padding:52px 0 66px;background:linear-gradient(130deg,#f8f5ec 0%,#fffdf8 54%,#e9f1d2 100%);overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center}.hero-copy{padding:35px 0}.hero-copy .lead{margin-bottom:26px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px}.compat{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}.compat span{padding:5px 10px;border:1px solid var(--line);border-radius:99px;background:rgba(255,255,255,.67);font-size:12px;color:var(--muted)}.app-stage{min-height:420px;position:relative;background:var(--dark);border-radius:28px;overflow:hidden;padding:29px;box-shadow:0 26px 50px rgba(27,34,22,.19)}.app-stage:before{content:"";position:absolute;width:320px;height:320px;border-radius:50%;background:var(--lime);opacity:.16;right:-88px;top:-92px}.stage-note{color:#d8ddd1;font-size:13px;position:relative}.stage-note b{color:var(--lime)}.phone{position:absolute;bottom:-62px;right:58px;width:220px;height:421px;padding:11px;border:6px solid #0f130f;border-radius:31px;background:#111;box-shadow:0 25px 36px rgba(0,0,0,.35);transform:rotate(7deg)}.screen{height:100%;overflow:hidden;border-radius:20px;background:#f5f2e9;padding:14px}.screen-top{display:flex;justify-content:space-between;font-size:10px;font-weight:800}.mini-banner{height:71px;border-radius:12px;background:#c7ef50;margin:12px 0;padding:10px;color:#253017;font-size:12px;font-weight:900}.mini-row{height:42px;margin:8px 0;border-radius:9px;background:#fff;display:flex;align-items:center;gap:8px;padding:7px;box-shadow:0 3px 10px rgba(0,0,0,.04)}.mini-dot{width:25px;height:25px;border-radius:8px;background:#e5a16a}.mini-line{height:6px;border-radius:9px;background:#dedbd2;flex:1}.float-card{position:absolute;left:32px;bottom:49px;width:196px;padding:16px;border-radius:16px;background:#fffdf8;box-shadow:var(--shadow);z-index:2}.float-card b{font-size:14px}.float-card p{font-size:12px;color:var(--muted);margin:4px 0 0}.quick{padding:0!important;position:relative;z-index:3}.quick-bar{margin-top:-24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);display:grid;grid-template-columns:repeat(4,1fr);box-shadow:var(--shadow);overflow:hidden}.quick-item{padding:21px 22px;border-right:1px solid var(--line);display:flex;gap:13px;align-items:center;transition:.2s}.quick-item:last-child{border:0}.quick-item:hover{background:#fbfdf3}.q-icon{width:39px;height:39px;display:grid;place-items:center;background:#eff8cf;border-radius:11px;font-size:18px}.quick-item b{display:block;font-size:14px}.quick-item span{font-size:12px;color:var(--muted);display:block}.focus-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.feature-card,.compact-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;transition:.25s}.feature-card:hover,.compact-card:hover,.news-row:hover,.platform:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c9c4b7}.feature-card{min-height:330px;padding:30px;position:relative;background:linear-gradient(145deg,#2a3228,#20261f);color:#fff}.feature-card:after{content:"";position:absolute;width:220px;height:220px;border-radius:50%;background:var(--lime);opacity:.18;right:-60px;bottom:-70px}.feature-card p{color:#cbd0c6;max-width:430px}.feature-card .read{position:absolute;bottom:28px;left:30px;color:var(--lime);font-weight:800}.feature-visual{position:absolute;right:24px;bottom:26px;width:172px;height:121px;background:#ece9de;border-radius:15px;padding:12px;transform:rotate(-4deg)}.feature-visual div{height:15px;background:#c6ed4d;border-radius:6px;margin-bottom:9px}.feature-visual i{display:block;height:8px;width:75%;background:#c7c5bd;border-radius:6px;margin-top:9px}.compact-stack{display:grid;gap:18px}.compact-card{padding:21px;min-height:156px;position:relative}.compact-card p{font-size:13px;color:var(--muted);margin-bottom:10px}.compact-card a{font-size:13px;font-weight:900;color:#586d19}.download-zone{background:var(--sand)}.download-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:38px;align-items:center}.download-panel{background:#fffdf8;border:1px solid var(--line);border-radius:22px;padding:23px}.platforms{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.platform{border:1px solid var(--line);padding:17px;border-radius:14px;background:#fff;transition:.2s}.platform strong{display:block}.platform small{display:block;color:var(--muted);margin:5px 0 13px;font-size:12px}.platform a{font-size:13px;font-weight:900;color:#587018}.qr{width:116px;height:116px;border-radius:12px;border:7px solid #fff;background:repeating-linear-gradient(45deg,#242a21 0 5px,#fffdf8 5px 10px);box-shadow:0 0 0 1px var(--line);margin:auto}.install-tip{margin-top:16px;padding:11px 13px;border-radius:10px;background:var(--orange-bg);color:#85522f;font-size:13px}.feature-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.flow-item{padding:25px 22px 25px 0;position:relative}.flow-item:not(:last-child){margin-right:22px;border-right:1px solid var(--line)}.flow-num{font-size:13px;font-weight:900;color:#93b61c}.flow-item p{font-size:13px;color:var(--muted);margin:0}.gallery{background:var(--dark);color:#fff;overflow:hidden}.gallery .section-head p{color:#bec5b9}.gallery-track{display:flex;gap:18px;overflow:auto;padding:8px 2px 13px;scroll-snap-type:x mandatory}.gallery-track::-webkit-scrollbar{height:7px}.gallery-track::-webkit-scrollbar-thumb{background:#64705e;border-radius:8px}.gallery-card{min-width:255px;scroll-snap-align:start}.gallery-screen{height:292px;padding:13px;border:6px solid #111;border-radius:23px;background:#eae7dc;box-shadow:0 14px 30px rgba(0,0,0,.3)}.gallery-ui{height:100%;padding:13px;border-radius:13px;background:#fdfbf5}.gallery-ui b{font-size:12px}.gallery-ui .bar{height:45px;border-radius:9px;background:#c5ed50;margin:12px 0}.gallery-ui .line{height:9px;border-radius:5px;background:#dad7cd;margin:9px 0}.gallery-card h3{margin:14px 0 4px}.gallery-card p{color:#bbc2b5;font-size:13px;margin:0}.guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.guide-step{position:relative;padding:13px 26px 15px 0}.guide-step:not(:last-child):after{content:"";position:absolute;right:11px;top:32px;width:30px;height:1px;background:#b5b8ac}.guide-n{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--ink);color:var(--lime);font-weight:900;margin-bottom:16px}.guide-step p{font-size:13px;color:var(--muted);margin-bottom:0}.guide-action{margin-top:24px}.channels{background:var(--sand)}.channel-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;grid-template-rows:132px 132px;gap:14px}.channel{border:1px solid var(--line);border-radius:16px;background:#fff;padding:20px;display:flex;flex-direction:column;justify-content:space-between;transition:.2s}.channel:hover{border-color:#9cb94b;transform:translateY(-3px);box-shadow:var(--shadow)}.channel:nth-child(1){grid-row:span 2;background:var(--dark);color:#fff}.channel:nth-child(1) p{color:#c6cdc1}.channel:nth-child(5){background:#dff18c}.channel p{margin:4px 0 0;color:var(--muted);font-size:13px}.arrow{font-size:20px;color:var(--lime-deep);font-weight:900}.channel:first-child .arrow{color:var(--lime)}.updates{background:#fff}.news-list{border-top:1px solid var(--line)}.news-row{display:grid;grid-template-columns:82px 1fr auto;gap:23px;align-items:center;padding:20px 6px;border-bottom:1px solid var(--line);transition:.2s}.date-box{text-align:center;border-right:1px solid var(--line);padding:5px}.date-box b{display:block;font-size:25px;line-height:1}.date-box span{font-size:11px;color:var(--muted)}.news-copy h3{font-size:17px;margin:0 0 3px}.news-copy p{font-size:13px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}.news-side{text-align:right;min-width:110px}.news-side a{display:block;margin-top:7px;font-size:13px;font-weight:900;color:#5d741a}.empty{padding:48px;text-align:center;border:1px dashed #cac5b8;border-radius:var(--radius);color:var(--muted)}.empty i{display:block;font-style:normal;font-size:30px;margin-bottom:7px}.version-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:44px;align-items:start}.version-layout>p{color:var(--muted)}.timeline{border-left:2px solid #d9d5ca;padding-left:27px}.timeline-item{position:relative;padding:0 0 27px}.timeline-item:before{content:"";position:absolute;width:12px;height:12px;left:-34px;top:5px;border-radius:50%;background:var(--orange);box-shadow:0 0 0 5px var(--orange-bg)}.timeline-item:last-child{padding-bottom:0}.timeline-item b{font-size:17px}.timeline-item p{font-size:13px;color:var(--muted);margin:4px 0}.timeline-item a{font-size:13px;font-weight:800;color:#587018}.tutorial-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px}.lesson-list{background:var(--dark);padding:20px;border-radius:var(--radius);color:#fff}.lesson-list h3{margin-bottom:14px}.lesson-list a{display:flex;justify-content:space-between;gap:10px;padding:12px 0;border-top:1px solid rgba(255,255,255,.15);font-size:14px;color:#dce1d7}.lesson-list a:hover{color:var(--lime)}.install-faq{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.faq-item{border-bottom:1px solid var(--line)}.faq-item:last-child{border:0}.faq-q{border:0;width:100%;background:#fff;text-align:left;padding:17px 20px;display:flex;justify-content:space-between;align-items:center;font-weight:800;color:var(--ink)}.faq-q span:last-child{transition:.2s;color:var(--lime-deep)}.faq-a{display:none;padding:0 20px 17px;color:var(--muted);font-size:14px}.faq-item.open .faq-a{display:block}.faq-item.open .faq-q span:last-child{transform:rotate(45deg)}.safe{padding:0!important}.safe-strip{border:1px solid #e9d7c4;background:#fff6ed;border-radius:var(--radius);padding:27px 30px;display:grid;grid-template-columns:210px 1fr;gap:26px;align-items:center}.safe-strip h2{font-size:24px;margin:0}.safe-list{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.safe-list div{font-size:13px;color:#76523a}.safe-list b{display:block;color:var(--ink);font-size:14px;margin-bottom:3px}.faq-main{background:var(--sand)}.faq-wrap{max-width:900px;margin:auto}.faq-index{color:#96b81d;font-size:13px;font-weight:900;margin-right:10px}.cta{padding-top:0!important;background:var(--sand)}.cta-box{border-radius:25px;background:var(--dark);padding:45px;display:grid;grid-template-columns:1fr auto;align-items:center;gap:30px;color:#fff;overflow:hidden;position:relative}.cta-box:after{content:"";position:absolute;width:240px;height:240px;border:45px solid rgba(185,237,50,.13);border-radius:50%;right:-90px;bottom:-150px}.cta-box h2{margin-bottom:8px}.cta-box p{color:#c8cec2;margin:0;max-width:570px}.cta-right{display:flex;gap:17px;align-items:center;position:relative;z-index:1}.cta-right .qr{width:84px;height:84px}.cta-right small{display:block;color:#bfc7b9;margin-top:7px}.site-footer{background:#1d221d;color:#c4c9bf;padding-top:0}.footer-download{border-bottom:1px solid rgba(255,255,255,.12);padding:22px 0}.footer-download .container{display:flex;align-items:center;justify-content:space-between;gap:20px}.footer-app{display:flex;gap:12px;align-items:center}.footer-icon{width:42px;height:42px;border-radius:12px;background:var(--lime);color:var(--dark);display:grid;place-items:center;font-size:21px;font-weight:900}.footer-app b{display:block;color:#fff}.footer-app span{font-size:12px}.footer-body{display:grid;grid-template-columns:1.4fr .7fr 1fr;gap:50px;padding:45px 0}.footer-brand{color:#fff;font-size:18px;font-weight:900}.footer-brand small{display:block;color:#9ba397;font-size:12px;letter-spacing:1px}.footer-body p,.footer-body li{font-size:13px;color:#aeb5a9}.footer-body ul{list-style:none;margin:0;padding:0}.footer-body li{margin:8px 0}.footer-body a:hover{color:var(--lime)}.footer-bottom{padding:18px 0;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:15px;color:#899187;font-size:12px}.back-top{color:var(--lime);font-weight:800}
@media(max-width:1024px){.nav{gap:0}.nav a{padding:9px 8px}.brand{min-width:205px}.hero-grid,.download-grid{gap:25px}.safe-list{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.container{width:min(100% - 32px,var(--max))}.nav,.nav-download{display:none}.menu-btn{display:block;margin-left:auto}.site-header.open .nav{display:flex;position:absolute;top:76px;left:0;right:0;padding:14px 16px 18px;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch}.site-header.open .nav a{padding:12px}.hero{padding-top:25px}.hero-grid,.focus-grid,.download-grid,.version-layout,.tutorial-grid{grid-template-columns:1fr}.app-stage{min-height:345px}.quick-bar{grid-template-columns:repeat(2,1fr)}.quick-item:nth-child(2){border-right:0}.quick-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.platforms{grid-template-columns:1fr}.feature-flow,.guide-grid{grid-template-columns:repeat(2,1fr);gap:18px}.flow-item:not(:last-child){border-right:0;margin-right:0}.guide-step:not(:last-child):after{display:none}.channel-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto}.channel:nth-child(1){grid-row:auto}.news-row{grid-template-columns:62px 1fr}.news-side{grid-column:2;text-align:left}.safe-strip{grid-template-columns:1fr}.cta-box{grid-template-columns:1fr;padding:32px}.footer-body{grid-template-columns:1fr 1fr;gap:25px}.footer-body>div:first-child{grid-column:span 2}}
@media(max-width:520px){main section{padding:58px 0}h1{font-size:33px}.brand strong{font-size:13px}.brand{min-width:0}.hero-actions,.hero-actions .btn{width:100%}.phone{right:18px;width:187px;height:357px}.float-card{left:18px;bottom:31px;width:155px}.quick-item{padding:15px 12px}.quick-item span{display:none}.section-head{display:block}.section-head p{margin-top:9px}.feature-card{min-height:300px}.feature-visual{width:130px;right:13px}.feature-flow,.guide-grid,.safe-list{grid-template-columns:1fr}.channel-grid{grid-template-columns:1fr}.news-row{gap:13px;padding:17px 0}.news-copy h3{font-size:15px}.date-box b{font-size:21px}.footer-download .container,.footer-bottom{align-items:flex-start;flex-direction:column}.footer-body{grid-template-columns:1fr}.footer-body>div:first-child{grid-column:auto}.cta-right{align-items:flex-start;flex-direction:column}}

/* roulang page: category1 */
:root{--lime:#b9ed32;--lime-deep:#91bd11;--ink:#20231e;--ink2:#343930;--paper:#fffdf8;--sand:#f3f0e8;--sand2:#ebe6da;--muted:#73776d;--line:#ded9cd;--orange:#ee9d62;--orange-bg:#fff0e4;--dark:#1f251f;--dark2:#2c352b;--radius:18px;--radius-sm:12px;--shadow:0 16px 38px rgba(34,38,29,.08);--max:1200px}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.7}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{max-width:100%;display:block}.container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{position:sticky;top:0;z-index:40;background:rgba(255,253,248,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.nav-wrap{height:76px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:10px;min-width:236px}.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--ink);color:var(--lime);display:grid;place-items:center;font-size:22px;font-weight:900}.brand strong{display:block;font-size:15px;line-height:1.15;letter-spacing:-.4px}.brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:1.1px;text-transform:uppercase}.nav{display:flex;align-items:center;gap:3px;margin-left:auto}.nav a{padding:10px 12px;border-radius:9px;color:#5c6258;font-size:14px;font-weight:700;white-space:nowrap;position:relative;transition:.2s}.nav a:hover,.nav a.active{color:var(--ink);background:#eff8cf}.nav a.active:after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--lime-deep);border-radius:2px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 19px;border:1px solid transparent;border-radius:11px;font-weight:800;transition:transform .2s,background .2s,box-shadow .2s}.btn:hover{transform:translateY(-2px);box-shadow:0 10px 20px rgba(30,37,19,.12)}.btn:focus-visible,.nav a:focus-visible,.faq-q:focus-visible{outline:3px solid rgba(185,237,50,.58);outline-offset:3px}.btn-primary{background:var(--lime);color:#1f2913}.btn-primary:hover{background:#c8f54f}.btn-outline{border-color:#c8c5ba;background:transparent;color:var(--ink)}.btn-outline:hover{background:#fff}.nav-download{margin-left:4px;white-space:nowrap}.menu-btn{display:none;border:0;background:var(--sand);width:42px;height:42px;border-radius:10px;font-size:20px}
    main section{padding:82px 0}.eyebrow{display:inline-flex;align-items:center;gap:7px;color:#5e6e24;font-size:12px;font-weight:900;letter-spacing:.08em}.eyebrow:before{content:"";width:22px;height:2px;background:var(--lime-deep)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(36px,5vw,56px);line-height:1.15;letter-spacing:-2px;margin:14px 0 18px}h2{font-size:34px;line-height:1.25;letter-spacing:-1px;margin-bottom:12px}h3{font-size:21px;line-height:1.35}.lead{font-size:17px;color:#60655c;max-width:700px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:30px}.section-head p{color:var(--muted);margin:0;max-width:540px}.tag{display:inline-flex;align-items:center;min-height:26px;padding:2px 9px;border-radius:99px;background:#edf7cd;color:#596a1f;font-size:12px;font-weight:800}.tag.orange{background:var(--orange-bg);color:#a45e2f}
    .page-head{padding:64px 0 58px;background:linear-gradient(135deg,#f3f0e8 0%,#fffdf8 62%,#edf5d8 100%)}.head-row{display:flex;justify-content:space-between;align-items:end;gap:35px}.head-meta{min-width:240px;padding:18px 20px;border-left:3px solid var(--lime-deep);background:rgba(255,255,255,.62);border-radius:0 14px 14px 0}.head-meta span{display:block;color:var(--muted);font-size:13px}.head-meta strong{display:block;font-size:20px;margin-top:4px}
    .platform-section{background:#fff}.platform-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.platform{border:1px solid var(--line);border-radius:var(--radius);padding:28px;background:#fffdf8;min-height:300px;transition:.25s;position:relative;overflow:hidden}.platform:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#c9c4b7}.platform:after{content:"";position:absolute;width:130px;height:130px;border-radius:50%;right:-50px;bottom:-55px;background:#eff8cf}.platform-icon{width:48px;height:48px;border-radius:14px;background:var(--dark);color:var(--lime);display:grid;place-items:center;font-size:20px;font-weight:900;margin-bottom:22px}.platform h3{margin-bottom:8px}.platform p{font-size:14px;color:var(--muted);min-height:51px}.platform-info{display:flex;gap:8px;flex-wrap:wrap;margin:17px 0}.qr{width:58px;height:58px;border:5px solid #fff;background:repeating-linear-gradient(45deg,#20231e 0 4px,#fff 4px 8px);box-shadow:0 0 0 1px var(--line);border-radius:6px}.platform-bottom{display:flex;align-items:center;justify-content:space-between;gap:15px}.platform-bottom small{color:var(--muted);font-size:12px}
    .check-section{background:var(--sand)}.check-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:42px;align-items:start}.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.check-item{display:flex;gap:14px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:14px}.check-num{flex:none;width:30px;height:30px;border-radius:50%;background:var(--lime);display:grid;place-items:center;font-weight:900}.check-item b{display:block;font-size:15px}.check-item span{display:block;color:var(--muted);font-size:13px;margin-top:3px}.tip-box{padding:28px;background:var(--dark);color:#f8faf0;border-radius:20px}.tip-box p{color:#ced5c8;font-size:15px}.tip-box ul{margin:15px 0 0;padding-left:20px;color:#dce2d5}.tip-box li+li{margin-top:8px}
    .steps-section{background:#fff}.install-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.install-step{padding:28px 24px 28px 0;position:relative}.install-step:not(:last-child){margin-right:24px;border-right:1px solid var(--line)}.step-label{color:var(--lime-deep);font-size:14px;font-weight:900}.install-step h3{margin:10px 0 8px}.install-step p{font-size:14px;color:var(--muted);margin:0}
    .timeline-section{background:var(--sand)}.timeline{border-left:2px solid #cbd795;margin-left:10px}.timeline-item{position:relative;padding:0 0 28px 34px}.timeline-item:last-child{padding-bottom:0}.timeline-item:before{content:"";position:absolute;left:-9px;top:5px;width:16px;height:16px;border:4px solid var(--sand);background:var(--lime-deep);border-radius:50%}.timeline-card{display:flex;align-items:center;justify-content:space-between;gap:25px;padding:22px 24px;background:#fff;border:1px solid var(--line);border-radius:15px}.timeline-card p{margin:4px 0 0;color:var(--muted);font-size:14px}.date{color:var(--muted);font-size:13px;white-space:nowrap}
    .faq-section{background:#fff}.faq-list{max-width:900px;border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;border:0;background:none;padding:21px 4px;font-weight:800;color:var(--ink)}.faq-q span:last-child{font-size:24px;color:var(--lime-deep);transition:.2s}.faq-a{display:none;padding:0 40px 21px 4px;color:var(--muted);font-size:15px}.faq-item.open .faq-a{display:block}.faq-item.open .faq-q span:last-child{transform:rotate(45deg)}
    .article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.article-card{padding:24px;background:#fff;border:1px solid var(--line);border-radius:16px;transition:.25s}.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.article-card h3{margin:14px 0 8px}.article-card p{font-size:14px;color:var(--muted);margin-bottom:18px}.read-link{font-weight:900;color:#5d7419;font-size:14px}.more-row{text-align:center;margin-top:28px}
    .download-bar{background:var(--dark);color:#fff;padding:28px 0}.download-bar .container{display:flex;align-items:center;justify-content:space-between;gap:20px}.download-bar p{margin:4px 0 0;color:#cbd2c6;font-size:14px}.download-bar .qr{display:none}
    .site-footer{background:var(--dark);color:#cbd2c6}.footer-download{background:var(--dark2);padding:20px 0;border-bottom:1px solid rgba(255,255,255,.09)}.footer-download .container{display:flex;align-items:center;justify-content:space-between;gap:20px}.footer-app{display:flex;align-items:center;gap:13px}.footer-icon{width:42px;height:42px;border-radius:12px;background:var(--lime);color:var(--ink);display:grid;place-items:center;font-weight:900;font-size:21px}.footer-app b{display:block;color:#fff;font-size:14px}.footer-app span{display:block;color:#aeb8aa;font-size:12px}.footer-body{display:grid;grid-template-columns:1.4fr .7fr 1fr;gap:55px;padding:48px 0 38px}.footer-brand{font-size:22px;font-weight:900;color:#fff}.footer-brand small{display:block;color:var(--lime);font-size:11px;letter-spacing:1.2px}.footer-body p{font-size:14px;color:#aeb8aa;margin:12px 0 0;max-width:360px}.footer-body ul{list-style:none;padding:0;margin:12px 0 0}.footer-body li{margin:5px 0}.footer-body a{font-size:14px;color:#aeb8aa;transition:.2s}.footer-body a:hover{color:var(--lime)}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:19px 0;display:flex;justify-content:space-between;gap:20px;color:#899487;font-size:12px}.back-top:hover{color:var(--lime)}
    @media(max-width:1024px){.nav-wrap{gap:12px}.brand{min-width:205px}.nav a{padding:9px 8px;font-size:13px}.platform-grid{grid-template-columns:repeat(3,1fr)}}
    @media(max-width:768px){.container{width:min(var(--max),calc(100% - 32px))}.nav{display:none;position:absolute;left:16px;right:16px;top:70px;padding:12px;background:var(--paper);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav.show{display:flex}.nav a{padding:13px 15px}.nav-download{display:none}.menu-btn{display:block;margin-left:auto}.nav-wrap{height:70px}.head-row,.check-grid{display:block}.head-meta{margin-top:28px}.head-meta{min-width:0}.platform-grid,.article-list{grid-template-columns:1fr 1fr}.install-steps{grid-template-columns:1fr 1fr}.install-step:nth-child(2){border-right:0}.install-step:nth-child(-n+2){border-bottom:1px solid var(--line)}.download-bar .container{align-items:flex-start;flex-direction:column}}
    @media(max-width:520px){main section{padding:60px 0}h1{font-size:34px;letter-spacing:-1px}h2{font-size:27px}.section-head{display:block}.section-head p{margin-top:10px}.platform-grid,.article-list,.check-list,.install-steps{grid-template-columns:1fr}.install-step,.install-step:not(:last-child){margin-right:0;border-right:0;border-bottom:1px solid var(--line)}.install-step:last-child{border-bottom:0}.timeline-card{display:block}.date{display:block;margin-top:8px}.footer-download .container,.footer-bottom{align-items:flex-start;flex-direction:column}.footer-body{grid-template-columns:1fr;gap:28px;padding:38px 0}.footer-body>div:first-child{padding-bottom:8px}.platform{min-height:auto}}

/* roulang page: article */
:root{--lime:#b9ed32;--lime-deep:#91bd11;--ink:#20231e;--ink2:#343930;--paper:#fffdf8;--sand:#f3f0e8;--sand2:#ebe6da;--muted:#73776d;--line:#ded9cd;--orange:#ee9d62;--orange-bg:#fff0e4;--dark:#1f251f;--dark2:#2c352b;--radius:18px;--radius-sm:12px;--shadow:0 16px 38px rgba(34,38,29,.08);--max:1200px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.7}
    a{color:inherit;text-decoration:none}
    a:hover{color:inherit}
    button,input{font:inherit}
    button{cursor:pointer}
    img{display:block;max-width:100%}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{position:sticky;top:0;z-index:40;background:rgba(255,253,248,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .nav-wrap{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:10px;min-width:236px}
    .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--ink);color:var(--lime);display:grid;place-items:center;font-size:22px;font-weight:900;box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}
    .brand strong{display:block;font-size:15px;line-height:1.15;letter-spacing:-.4px}
    .brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:1.1px;text-transform:uppercase}
    .nav{display:flex;align-items:center;gap:3px;margin-left:auto}
    .nav a{padding:10px 12px;border-radius:9px;color:#5c6258;font-size:14px;font-weight:700;white-space:nowrap;position:relative;transition:.2s}
    .nav a:hover,.nav a.active{color:var(--ink);background:#eff8cf}
    .nav a.active:after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--lime-deep);border-radius:2px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 19px;border:1px solid transparent;border-radius:11px;font-weight:800;transition:transform .2s,background .2s,box-shadow .2s}
    .btn:hover{transform:translateY(-2px);box-shadow:0 10px 20px rgba(30,37,19,.12)}
    .btn:focus-visible,.nav a:focus-visible,.faq-q:focus-visible{outline:3px solid rgba(185,237,50,.58);outline-offset:3px}
    .btn-primary{background:var(--lime);color:#1f2913}
    .btn-primary:hover{background:#c8f54f}
    .btn-outline{border-color:#c8c5ba;background:transparent;color:var(--ink)}
    .btn-outline:hover{background:#fff}
    .nav-download{margin-left:4px;white-space:nowrap}
    .menu-btn{display:none;border:0;background:var(--sand);width:42px;height:42px;border-radius:10px;font-size:20px}
    main section{padding:74px 0}
    .article-intro{padding:54px 0 44px;background:linear-gradient(135deg,#f6f2e8,#fffdf8 62%,#edf5d7)}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:#5e6e24;font-size:12px;font-weight:900;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--lime-deep)}
    .breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:24px}
    .breadcrumb a:hover{color:var(--ink)}
    .article-title{max-width:920px;margin:14px 0 16px;font-size:clamp(32px,5vw,54px);line-height:1.2;letter-spacing:-1.8px;font-weight:900}
    .article-summary{max-width:790px;margin:0;color:#62685e;font-size:18px}
    .meta-line{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:24px;color:var(--muted);font-size:13px}
    .tag{display:inline-flex;align-items:center;min-height:26px;padding:2px 9px;border-radius:99px;background:#edf7cd;color:#596a1f;font-size:12px;font-weight:800}
    .tag.orange{background:var(--orange-bg);color:#a45e2f}
    .reading-layout{display:grid;grid-template-columns:minmax(0,790px) 270px;gap:58px;align-items:start}
    .article-cover{min-height:220px;border-radius:var(--radius);background:linear-gradient(135deg,#263026,#46543a);position:relative;overflow:hidden;padding:34px;color:#fff;display:flex;align-items:end;box-shadow:var(--shadow)}
    .article-cover:before{content:"";position:absolute;width:300px;height:300px;border-radius:50%;background:var(--lime);opacity:.2;right:-70px;top:-120px}
    .cover-grid{position:absolute;inset:28px 30px auto auto;width:230px;display:grid;grid-template-columns:1fr 1fr;gap:10px;opacity:.8}
    .cover-grid i{height:46px;border-radius:10px;background:#f5f3eb;display:block}
    .cover-grid i:nth-child(2){background:var(--lime)}
    .cover-grid i:nth-child(3){height:70px;background:#cdd2c6}
    .cover-grid i:nth-child(4){height:70px;background:#87947d}
    .cover-copy{position:relative;z-index:1}
    .cover-copy b{font-size:20px}
    .cover-copy span{display:block;color:#d8ddd1;font-size:13px;margin-top:5px}
    .article-body{padding-top:18px}
    .article-body h2{font-size:29px;line-height:1.35;margin:38px 0 15px}
    .article-body h3{font-size:22px;line-height:1.4;margin:30px 0 12px}
    .article-body p{margin:0 0 20px;color:#454a42;font-size:17px}
    .article-body ul,.article-body ol{padding-left:1.5em;margin:0 0 22px;color:#454a42}
    .article-body li{margin:7px 0}
    .article-body blockquote{margin:28px 0;padding:18px 22px;border-left:4px solid var(--lime-deep);border-radius:0 var(--radius-sm) var(--radius-sm) 0;background:#f1f5e4;color:#4e5d32}
    .article-body img{border-radius:14px;margin:28px auto}
    .article-body code{padding:3px 7px;border-radius:6px;background:var(--sand);color:#68751e}
    .article-body .notice{padding:18px 20px;border:1px solid #f2c49d;border-radius:var(--radius-sm);background:var(--orange-bg);color:#744c2f}
    .article-side{position:sticky;top:100px}
    .side-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:22px}
    .side-card+.side-card{margin-top:16px}
    .side-card h3{font-size:16px;margin:0 0 14px}
    .side-card p{font-size:13px;color:var(--muted);margin:0}
    .side-list{list-style:none;padding:0;margin:0}
    .side-list li{padding:9px 0;border-bottom:1px solid var(--line);font-size:13px}
    .side-list li:last-child{border-bottom:0}
    .download-note{display:flex;align-items:center;gap:16px;padding:20px;border-radius:var(--radius);background:var(--dark);color:#fff;margin-top:34px}
    .download-note .app-icon,.footer-icon{width:46px;height:46px;display:grid;place-items:center;border-radius:14px;background:var(--lime);color:var(--ink);font-weight:900;font-size:22px;flex:0 0 auto}
    .download-note b{display:block;font-size:15px}
    .download-note span{display:block;color:#c8d0c1;font-size:12px}
    .download-note .btn{margin-left:auto;min-height:40px;padding:0 14px}
    .security-box{padding:24px 28px;border:1px solid #f1c397;border-radius:var(--radius);background:var(--orange-bg);display:flex;gap:16px;align-items:flex-start}
    .security-icon{width:34px;height:34px;border-radius:50%;background:#f3bd8e;color:#754a2c;display:grid;place-items:center;font-weight:900;flex:0 0 auto}
    .security-box h2{font-size:20px;margin:0 0 5px}
    .security-box p{margin:0;color:#71543d;font-size:14px}
    .related{background:var(--sand)}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:28px}
    .section-head h2{font-size:30px;margin:0;line-height:1.3}
    .section-head p{color:var(--muted);margin:0;max-width:510px}
    .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .related-card{display:block;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:.25s}
    .related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c6c0b1}
    .related-card h3{font-size:18px;line-height:1.45;margin:14px 0 8px}
    .related-card p{color:var(--muted);font-size:13px;margin:0}
    .related-card time{display:block;margin-top:16px;color:#969a90;font-size:12px}
    .article-actions{padding:48px 0}
    .action-row{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:26px 30px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
    .action-row p{margin:4px 0 0;color:var(--muted);font-size:14px}
    .action-buttons{display:flex;gap:10px;flex-wrap:wrap}
    .empty-state{text-align:center;padding:78px 24px;border:1px dashed #c9c5b9;border-radius:var(--radius);background:#fff}
    .empty-state .empty-icon{width:58px;height:58px;margin:0 auto 15px;border-radius:18px;background:#edf7cd;color:#657d18;display:grid;place-items:center;font-size:25px}
    .empty-state h2{margin:0 0 8px;font-size:26px}
    .empty-state p{color:var(--muted);margin:0 0 22px}
    .site-footer{background:var(--dark);color:#cbd1c5}
    .footer-download{background:var(--dark2);border-bottom:1px solid rgba(255,255,255,.08)}
    .footer-download .container{min-height:86px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .footer-app{display:flex;align-items:center;gap:13px}
    .footer-app b{display:block;color:#fff;font-size:14px}
    .footer-app span{display:block;color:#aeb8a9;font-size:12px}
    .footer-body{display:grid;grid-template-columns:1.4fr .7fr 1fr;gap:60px;padding-top:52px;padding-bottom:42px}
    .footer-brand{font-size:22px;color:#fff;font-weight:900}
    .footer-brand small{display:block;color:var(--lime);font-size:11px;letter-spacing:1.2px}
    .footer-body p{font-size:13px;line-height:1.8;color:#aeb8a9;max-width:360px}
    .footer-body ul{list-style:none;padding:0;margin:10px 0 0}
    .footer-body li{margin:7px 0;font-size:13px}
    .footer-body a{color:#aeb8a9;transition:.2s}
    .footer-body a:hover{color:var(--lime)}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:17px 0;border-top:1px solid rgba(255,255,255,.1);font-size:12px;color:#899486}
    .back-top{color:var(--lime)}
    @media(max-width:1024px){.nav-wrap{gap:14px}.brand{min-width:205px}.nav a{padding:9px 8px;font-size:13px}.reading-layout{grid-template-columns:minmax(0,1fr) 230px;gap:30px}}
    @media(max-width:768px){.container{width:min(var(--max),calc(100% - 32px))}.nav{display:none;position:absolute;left:16px;right:16px;top:69px;padding:12px;background:var(--paper);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav.open{display:flex}.nav a{padding:12px 14px}.nav-download{margin-left:auto}.menu-btn{display:block}.nav-wrap{height:68px}.reading-layout{display:block}.article-side{position:static;margin-top:32px}.article-intro{padding:38px 0 34px}main section{padding:56px 0}.related-grid{grid-template-columns:1fr 1fr}.footer-body{grid-template-columns:1fr 1fr;gap:30px}}
    @media(max-width:520px){.brand{min-width:0}.brand strong{font-size:14px}.brand-mark{width:35px;height:35px}.nav-download{font-size:13px;padding:0 12px;min-height:40px}.article-title{font-size:32px;letter-spacing:-1px}.article-summary{font-size:16px}.meta-line{gap:7px 14px}.article-cover{min-height:185px;padding:22px}.cover-grid{transform:scale(.8);transform-origin:top right;right:10px;top:18px}.article-body p{font-size:16px}.download-note{align-items:flex-start;flex-wrap:wrap}.download-note .btn{margin-left:62px}.related-grid{grid-template-columns:1fr}.action-row{display:block;padding:22px}.action-buttons{margin-top:18px}.action-buttons .btn{width:100%}.footer-download .container{padding:17px 0;align-items:flex-start}.footer-download .btn{min-height:40px;padding:0 12px;font-size:13px}.footer-body{display:block;padding-top:36px}.footer-body>div{margin-bottom:27px}.footer-bottom{display:block}.footer-bottom .back-top{display:block;margin-top:8px}}

/* roulang page: category2 */
:root{
      --lime:#b9ed32;--lime-deep:#91bd11;--ink:#20231e;--ink2:#343930;
      --paper:#fffdf8;--sand:#f3f0e8;--sand2:#ebe6da;--muted:#73776d;
      --line:#ded9cd;--orange:#ee9d62;--orange-bg:#fff0e4;--dark:#1f251f;
      --dark2:#2c352b;--radius:18px;--radius-sm:12px;
      --shadow:0 16px 38px rgba(34,38,29,.08);--max:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    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:40;background:rgba(255,253,248,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .nav-wrap{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:10px;min-width:236px}
    .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--ink);color:var(--lime);display:grid;place-items:center;font-size:22px;font-weight:900}
    .brand strong{display:block;font-size:15px;line-height:1.15;letter-spacing:-.4px}
    .brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:1.1px;text-transform:uppercase}
    .nav{display:flex;align-items:center;gap:3px;margin-left:auto}
    .nav a{padding:10px 12px;border-radius:9px;color:#5c6258;font-size:14px;font-weight:700;white-space:nowrap;position:relative;transition:.2s}
    .nav a:hover,.nav a.active{color:var(--ink);background:#eff8cf}
    .nav a.active:after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--lime-deep);border-radius:2px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 19px;border:1px solid transparent;border-radius:11px;font-weight:800;transition:transform .2s,background .2s,box-shadow .2s}
    .btn:hover{transform:translateY(-2px);box-shadow:0 10px 20px rgba(30,37,19,.12)}
    .btn:focus-visible,.nav a:focus-visible,.faq-q:focus-visible,input:focus-visible{outline:3px solid rgba(185,237,50,.58);outline-offset:3px}
    .btn-primary{background:var(--lime);color:#1f2913}
    .btn-primary:hover{background:#c8f54f}
    .btn-outline{border-color:#c8c5ba;background:transparent;color:var(--ink)}
    .btn-outline:hover{background:#fff}
    .nav-download{margin-left:4px;white-space:nowrap}
    .menu-btn{display:none;border:0;background:var(--sand);width:42px;height:42px;border-radius:10px;font-size:20px}
    main section{padding:78px 0}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:#5e6e24;font-size:12px;font-weight:900;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--lime-deep)}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(36px,5vw,58px);line-height:1.12;letter-spacing:-2px;margin:16px 0 20px;font-weight:900}
    h2{font-size:clamp(28px,3.5vw,38px);line-height:1.2;letter-spacing:-1px;margin-bottom:12px;font-weight:900}
    h3{font-size:21px;line-height:1.35;margin-bottom:9px}
    .lead{font-size:17px;color:#60655c;max-width:700px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:30px}
    .section-head p{color:var(--muted);margin:0;max-width:550px}
    .tag{display:inline-flex;align-items:center;min-height:26px;padding:2px 9px;border-radius:99px;background:#edf7cd;color:#596a1f;font-size:12px;font-weight:800}
    .tag.orange{background:var(--orange-bg);color:#a45e2f}
    .tag.dark{background:#3b4738;color:var(--lime)}
    .page-intro{background:linear-gradient(135deg,#f3f0e8 0%,#fffdf8 70%);padding:62px 0 58px;border-bottom:1px solid var(--line)}
    .intro-layout{display:flex;justify-content:space-between;align-items:end;gap:40px}
    .intro-meta{min-width:245px;padding:20px 22px;border-left:3px solid var(--lime-deep);background:#fff;border-radius:0 var(--radius-sm) var(--radius-sm) 0;box-shadow:0 8px 22px rgba(34,38,29,.05)}
    .intro-meta span{display:block;color:var(--muted);font-size:13px}
    .intro-meta strong{display:block;font-size:18px;margin-top:3px}
    .tag-band{display:flex;flex-wrap:wrap;gap:9px;margin-top:25px}
    .featured{background:var(--paper)}
    .featured-card{display:grid;grid-template-columns:.95fr 1.05fr;min-height:310px;border-radius:var(--radius);overflow:hidden;background:var(--dark);color:#fff;box-shadow:var(--shadow)}
    .featured-visual{min-height:310px;background:linear-gradient(145deg,#526044,#283128);position:relative;padding:28px}
    .featured-visual:after{content:"";position:absolute;width:230px;height:230px;background:var(--lime);opacity:.18;border-radius:50%;right:-60px;top:-65px}
    .visual-sheet{position:absolute;left:28px;right:40px;bottom:30px;background:#fffdf8;border-radius:15px;padding:17px;color:var(--ink);transform:rotate(-3deg);box-shadow:0 16px 25px rgba(0,0,0,.16)}
    .visual-sheet b{display:block;margin-bottom:10px}
    .visual-line{height:11px;background:#d8dec9;border-radius:8px;margin:8px 0}
    .visual-line.green{width:72%;background:var(--lime)}
    .featured-copy{padding:42px 45px;display:flex;flex-direction:column;justify-content:center}
    .featured-copy h2{font-size:31px;margin:15px 0 12px;color:#fff}
    .featured-copy p{color:#d0d6ca;max-width:510px}
    .featured-copy .read-link{color:var(--lime);font-weight:900;margin-top:15px}
    .news-section{background:var(--sand)}
    .news-layout{display:grid;grid-template-columns:1fr 280px;gap:28px}
    .news-list{border-top:1px solid var(--line)}
    .news-group{padding-top:22px}
    .news-date{font-size:13px;font-weight:900;color:#65702e;margin-bottom:4px}
    .news-row{display:grid;grid-template-columns:92px 1fr auto;gap:20px;align-items:center;padding:21px 0;border-bottom:1px solid var(--line);transition:.2s}
    .news-row h3{font-size:19px;margin:0 0 5px}
    .news-row p{font-size:14px;color:var(--muted);margin:0;max-width:620px}
    .read-more{color:#63791d;font-weight:900;font-size:13px;white-space:nowrap}
    .rank-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;height:max-content}
    .rank-box h3{margin-bottom:17px}
    .rank-item{display:flex;gap:13px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}
    .rank-item:last-child{border-bottom:0}
    .rank-num{font-size:21px;font-weight:900;color:#a5b27c;line-height:1.2}
    .rank-item:first-of-type .rank-num{color:var(--orange)}
    .rank-item span:last-child{line-height:1.45}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .timeline-item{padding:24px 22px 25px 0;position:relative}
    .timeline-item:not(:last-child){margin-right:22px;border-right:1px solid var(--line)}
    .timeline-item time{font-size:12px;color:var(--muted)}
    .timeline-item strong{display:block;font-size:19px;margin:9px 0}
    .timeline-item p{font-size:13px;color:var(--muted);margin:0}
    .timeline-dot{width:10px;height:10px;border-radius:50%;background:var(--lime-deep);display:block;margin-bottom:13px}
    .labels-section{background:#fff}
    .label-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .label-card{border:1px solid var(--line);border-radius:var(--radius-sm);padding:22px;background:#fffdf8;transition:.2s}
    .label-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c8c3b5}
    .label-card b{display:block;font-size:17px;margin-bottom:6px}
    .label-card p{font-size:14px;color:var(--muted);margin:0}
    .subscribe{background:var(--dark);color:#fff}
    .subscribe-box{display:grid;grid-template-columns:1fr .8fr;gap:45px;align-items:center}
    .subscribe h2{color:#fff}
    .subscribe p{color:#c9d0c4}
    .subscribe-form{display:flex;gap:10px}
    .subscribe-form input{width:100%;height:50px;border:1px solid #596151;border-radius:11px;background:#30392f;color:#fff;padding:0 15px}
    .subscribe-form input::placeholder{color:#abb2a7}
    .form-note{font-size:12px!important;color:#aeb6a8!important;margin-top:10px}
    .entry-strip{background:var(--orange-bg)}
    .entry-box{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .entry-box h2{font-size:27px;margin-bottom:7px}
    .entry-box p{color:#735b4a;margin:0}
    .entry-actions{display:flex;gap:10px;flex-wrap:wrap}
    .site-footer{background:var(--dark);color:#bac2b5}
    .footer-download{background:#293229;border-bottom:1px solid #414a3e}
    .footer-download .container{min-height:86px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .footer-app{display:flex;align-items:center;gap:13px}
    .footer-icon{width:40px;height:40px;border-radius:12px;background:var(--lime);color:var(--ink);display:grid;place-items:center;font-weight:900;font-size:21px}
    .footer-app b{display:block;color:#fff;font-size:14px}
    .footer-app span{display:block;font-size:12px}
    .footer-body{display:grid;grid-template-columns:1.5fr .7fr 1.1fr;gap:70px;padding:48px 0 38px}
    .footer-brand{color:#fff;font-size:20px;font-weight:900;margin-bottom:9px}
    .footer-brand small{display:block;color:var(--lime);font-size:11px;letter-spacing:1px}
    .footer-body p{font-size:13px;margin:0;max-width:360px}
    .footer-body ul{list-style:none;padding:0;margin:10px 0 0}
    .footer-body li{margin:6px 0;font-size:13px}
    .footer-body a:hover{color:var(--lime)}
    .footer-bottom{border-top:1px solid #414a3e;padding:17px 0;display:flex;justify-content:space-between;font-size:12px}
    .back-top{color:var(--lime);font-weight:800}
    @media(max-width:1024px){
      .nav-wrap{gap:12px}.brand{min-width:205px}.nav a{padding-left:8px;padding-right:8px}
      .featured-copy{padding:30px}.news-layout{grid-template-columns:1fr 240px}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .nav{display:none;position:absolute;top:76px;left:16px;right:16px;background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav.open{display:flex}.nav a{padding:13px 14px}.nav-download{display:none}.menu-btn{display:block;margin-left:auto}
      .intro-layout,.entry-box,.footer-download .container{align-items:flex-start;flex-direction:column}
      .intro-meta{width:100%}.featured-card,.subscribe-box{grid-template-columns:1fr}
      .featured-visual{min-height:220px}.featured-copy{padding:30px 25px}
      .news-layout{grid-template-columns:1fr}.rank-box{order:-1}
      .timeline{grid-template-columns:1fr 1fr}.timeline-item{border-right:0!important;margin-right:0!important;padding-right:15px}
      .label-grid{grid-template-columns:1fr 1fr}.subscribe-form{flex-direction:column}
      .footer-body{grid-template-columns:1fr 1fr;gap:30px}
    }
    @media(max-width:520px){
      main section{padding:58px 0}.page-intro{padding:45px 0}
      h1{font-size:34px;letter-spacing:-1px}.section-head{display:block}
      .section-head p{margin-top:10px}.news-row{grid-template-columns:1fr;gap:5px;padding:18px 0}
      .read-more{margin-top:5px}.timeline,.label-grid{grid-template-columns:1fr}
      .timeline-item{border-bottom:1px solid var(--line)!important;padding:19px 0}
      .timeline-item:last-child{border-bottom:0!important}.entry-actions,.entry-actions .btn{width:100%}
      .footer-body{grid-template-columns:1fr}.footer-bottom{gap:12px;align-items:flex-start;flex-direction:column}
    }

/* roulang page: category4 */
:root{--lime:#b9ed32;--lime-deep:#91bd11;--ink:#20231e;--ink2:#343930;--paper:#fffdf8;--sand:#f3f0e8;--sand2:#ebe6da;--muted:#73776d;--line:#ded9cd;--orange:#ee9d62;--orange-bg:#fff0e4;--dark:#1f251f;--dark2:#2c352b;--radius:18px;--radius-sm:12px;--shadow:0 16px 38px rgba(34,38,29,.08);--max:1200px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.7}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{cursor:pointer}
    img{max-width:100%;display:block}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{position:sticky;top:0;z-index:40;background:rgba(255,253,248,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .nav-wrap{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:10px;min-width:236px}
    .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--ink);color:var(--lime);display:grid;place-items:center;font-size:22px;font-weight:900;box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}
    .brand strong{display:block;font-size:15px;line-height:1.15;letter-spacing:-.4px}
    .brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:1.1px;text-transform:uppercase}
    .nav{display:flex;align-items:center;gap:3px;margin-left:auto}
    .nav a{padding:10px 12px;border-radius:9px;color:#5c6258;font-size:14px;font-weight:700;white-space:nowrap;position:relative;transition:.2s}
    .nav a:hover,.nav a.active{color:var(--ink);background:#eff8cf}
    .nav a.active:after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--lime-deep);border-radius:2px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 19px;border:1px solid transparent;border-radius:11px;font-weight:800;transition:transform .2s,background .2s,box-shadow .2s}
    .btn:hover{transform:translateY(-2px);box-shadow:0 10px 20px rgba(30,37,19,.12)}
    .btn:focus-visible,.nav a:focus-visible,.faq-q:focus-visible,.menu-btn:focus-visible{outline:3px solid rgba(185,237,50,.58);outline-offset:3px}
    .btn-primary{background:var(--lime);color:#1f2913}
    .btn-primary:hover{background:#c8f54f}
    .btn-outline{border-color:#c8c5ba;background:transparent;color:var(--ink)}
    .btn-outline:hover{background:#fff}
    .nav-download{margin-left:4px;white-space:nowrap}
    .menu-btn{display:none;border:0;background:var(--sand);width:42px;height:42px;border-radius:10px;font-size:20px}
    main section{padding:78px 0}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:#5e6e24;font-size:12px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--lime-deep)}
    .lead{font-size:17px;color:#60655c;max-width:680px;margin:14px 0 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:30px}
    .section-head h2,.page-head h1{margin:8px 0 0;font-weight:900;letter-spacing:-1.3px;line-height:1.22}
    .section-head h2{font-size:32px}
    .section-head p{color:var(--muted);margin:0;max-width:500px}
    .tag{display:inline-flex;align-items:center;min-height:26px;padding:2px 9px;border-radius:99px;background:#edf7cd;color:#596a1f;font-size:12px;font-weight:800}
    .tag.orange{background:var(--orange-bg);color:#a45e2f}
    .page-head{padding:62px 0 54px;background:linear-gradient(118deg,#f6f3ea 0%,#fffdf8 58%,#edf5d7 100%);border-bottom:1px solid var(--line)}
    .breadcrumb{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px;margin-bottom:23px}
    .breadcrumb a:hover{color:var(--ink)}
    .breadcrumb i{font-style:normal;color:#a5a79f}
    .page-head h1{font-size:48px;max-width:780px}
    .head-meta{margin-top:25px;display:flex;flex-wrap:wrap;gap:10px}
    .meta-chip{padding:7px 12px;background:rgba(255,255,255,.8);border:1px solid var(--line);border-radius:99px;color:#5c6258;font-size:13px}
    .route{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
    .route-step{min-height:190px;padding:27px 24px;border-right:1px solid var(--line);position:relative}
    .route-step:last-child{border-right:0}
    .route-num{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--ink);color:var(--lime);font-weight:900;font-size:13px}
    .route-step h3{font-size:19px;margin:21px 0 7px;font-weight:900}
    .route-step p{color:var(--muted);font-size:14px;margin:0}
    .route-step:after{content:"→";position:absolute;right:-11px;top:79px;width:22px;height:22px;display:grid;place-items:center;background:var(--lime);border-radius:50%;font-size:13px;font-weight:900;z-index:1}
    .route-step:last-child:after{display:none}
    .tutorials{background:var(--sand)}
    .tutorial-grid{display:grid;grid-template-columns:.86fr 1.14fr;gap:22px}
    .guide-index{border-radius:var(--radius);background:var(--dark);padding:29px;color:#fff}
    .guide-index h3{font-size:25px;margin:14px 0 10px;font-weight:900}
    .guide-index p{color:#c9d0c2;font-size:14px;margin:0 0 23px}
    .index-list{list-style:none;padding:0;margin:0}
    .index-list li{padding:13px 0;border-top:1px solid rgba(255,255,255,.13);display:flex;gap:12px;align-items:center;color:#e6eadf;font-size:14px}
    .index-list b{color:var(--lime);font-size:12px}
    .article-list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
    .article-item{padding:23px 26px;display:grid;grid-template-columns:46px 1fr auto;gap:17px;align-items:center;border-bottom:1px solid var(--line);transition:.2s}
    .article-item:last-of-type{border-bottom:0}
    .article-item:hover{background:#fbfdf4}
    .article-num{width:38px;height:38px;display:grid;place-items:center;background:#eef4df;border-radius:10px;color:#657b25;font-size:13px;font-weight:900}
    .article-item h3{font-size:17px;margin:0 0 4px;font-weight:900}
    .article-item p{margin:0;color:var(--muted);font-size:13px}
    .read-link{white-space:nowrap;color:#5c751c;font-weight:900;font-size:13px}
    .read-link:hover{color:var(--ink)}
    .list-more{padding:19px 26px;border-top:1px solid var(--line);display:flex;justify-content:flex-end}
    .interface-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:stretch}
    .interface-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:grid;grid-template-columns:1fr 190px;gap:24px;overflow:hidden;transition:.25s}
    .interface-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c9c4b7}
    .interface-card h3{font-weight:900;font-size:22px;margin:10px 0 8px}
    .interface-card p{color:var(--muted);font-size:14px;margin:0}
    .screen{min-height:212px;border-radius:17px;background:var(--dark);padding:14px;box-shadow:0 15px 24px rgba(26,31,24,.16)}
    .screen-top{display:flex;gap:6px;margin-bottom:13px}
    .screen-top i{display:block;width:7px;height:7px;border-radius:50%;background:#b9ed32}
    .screen-title{height:18px;width:64%;background:#e8ecd9;border-radius:6px;margin-bottom:15px}
    .screen-line{height:11px;background:#6c746a;border-radius:5px;margin:9px 0}
    .screen-line.lime{background:var(--lime);width:78%}
    .screen-cards{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:14px}
    .screen-cards span{height:52px;border-radius:9px;background:#394334}
    .screen-cards span:last-child{background:#687836}
    .operations{background:#f8f6f0}
    .operation-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .operation{padding:24px;border:1px solid var(--line);background:#fff;border-radius:var(--radius-sm);display:flex;gap:17px;transition:.2s}
    .operation:hover{border-color:#b8c988;box-shadow:0 10px 24px rgba(34,38,29,.06)}
    .operation-icon{flex:0 0 42px;width:42px;height:42px;background:#edf7cd;border-radius:12px;display:grid;place-items:center;color:#50651a;font-size:18px;font-weight:900}
    .operation h3{font-size:17px;font-weight:900;margin:0 0 5px}
    .operation p{font-size:14px;color:var(--muted);margin:0}
    .notice-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:32px;align-items:center}
    .notice-copy h2{font-size:32px;line-height:1.28;font-weight:900;margin:9px 0 14px}
    .notice-copy p{color:var(--muted);margin:0}
    .setting-board{background:var(--dark);border-radius:var(--radius);padding:27px;color:#fff}
    .setting-title{display:flex;align-items:center;justify-content:space-between;padding-bottom:17px;border-bottom:1px solid rgba(255,255,255,.14)}
    .setting-title b{font-size:17px}
    .setting-title span{font-size:12px;color:var(--lime)}
    .setting-row{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.12)}
    .setting-row:last-child{border-bottom:0}
    .setting-row b{display:block;font-size:14px}
    .setting-row small{display:block;color:#bbc2b2;font-size:12px;margin-top:2px}
    .switch{width:45px;height:25px;border-radius:99px;background:var(--lime);padding:3px;flex:0 0 auto}
    .switch i{display:block;width:19px;height:19px;background:#fff;border-radius:50%;margin-left:auto}
    .switch.off{background:#657060}
    .switch.off i{margin-left:0}
    .faq-area{background:var(--sand)}
    .faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:44px}
    .faq-intro h2{font-size:33px;line-height:1.26;font-weight:900;margin:10px 0 14px}
    .faq-intro p{color:var(--muted);margin:0}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-q{width:100%;border:0;background:transparent;text-align:left;padding:21px 42px 21px 0;color:var(--ink);font-weight:900;font-size:17px;position:relative}
    .faq-q:after{content:"+";position:absolute;right:5px;top:17px;color:#66771f;font-size:25px;font-weight:400;transition:.2s}
    .faq-item.open .faq-q:after{content:"−";transform:rotate(180deg)}
    .faq-a{display:none;padding:0 42px 21px 0;color:var(--muted);font-size:14px}
    .faq-item.open .faq-a{display:block}
    .download-strip{padding:0 0 88px}
    .download-panel{position:relative;overflow:hidden;background:var(--dark);border-radius:24px;padding:43px 48px;color:#fff;display:grid;grid-template-columns:1fr auto;gap:35px;align-items:center}
    .download-panel:after{content:"";position:absolute;width:290px;height:290px;border-radius:50%;background:var(--lime);opacity:.12;right:-105px;top:-160px}
    .download-panel h2{position:relative;font-size:31px;font-weight:900;margin:8px 0}
    .download-panel p{position:relative;margin:0;color:#cbd1c5;max-width:620px}
    .download-actions{position:relative;display:flex;align-items:center;gap:14px}
    .qr{width:76px;height:76px;padding:7px;background:#fff;border-radius:10px;display:grid;grid-template-columns:repeat(5,1fr);gap:3px}
    .qr i{background:#273024;border-radius:1px}
    .qr i:nth-child(2n),.qr i:nth-child(5n){background:transparent}
    .site-footer{background:var(--dark);color:#cbd0c5}
    .footer-download{border-bottom:1px solid rgba(255,255,255,.12);padding:21px 0}
    .footer-download .container{display:flex;justify-content:space-between;align-items:center;gap:24px}
    .footer-app{display:flex;align-items:center;gap:12px}
    .footer-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:var(--lime);color:#203017;font-weight:900;font-size:22px}
    .footer-app b{display:block;color:#fff;font-size:14px}
    .footer-app span{display:block;font-size:12px;color:#bfc6b7}
    .footer-body{padding:44px 0;display:grid;grid-template-columns:1.2fr .65fr 1fr;gap:56px}
    .footer-brand{color:#fff;font-size:21px;font-weight:900;line-height:1.1}
    .footer-brand small{display:block;color:var(--lime);font-size:11px;letter-spacing:1px;margin-top:7px}
    .footer-body p{font-size:13px;color:#aeb6a7;max-width:360px;margin:13px 0 0}
    .footer-body ul{list-style:none;padding:0;margin:12px 0 0}
    .footer-body li{margin:7px 0;font-size:13px}
    .footer-body a{color:#d6dccf;transition:.2s}
    .footer-body a:hover{color:var(--lime)}
    .footer-bottom{padding:17px 0;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#929b8c}
    .back-top{color:var(--lime)}
    @media(max-width:1024px){
      .nav-wrap{gap:15px}
      .brand{min-width:205px}
      .nav a{padding:10px 8px}
      .interface-card{grid-template-columns:1fr 150px}
      .footer-body{gap:30px}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .nav{display:none;position:absolute;left:16px;right:16px;top:68px;padding:12px;background:var(--paper);border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow)}
      .nav.open{display:flex;flex-direction:column;align-items:stretch}
      .nav a{padding:12px}
      .nav-download{margin-left:auto}
      .menu-btn{display:block}
      .page-head{padding:43px 0}
      .page-head h1{font-size:34px}
      .section-head,.faq-layout,.notice-layout{display:block}
      .section-head p{margin-top:12px}
      main section{padding:58px 0}
      .route{grid-template-columns:1fr 1fr}
      .route-step:nth-child(2){border-right:0}
      .route-step:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .route-step:after{display:none}
      .tutorial-grid,.interface-grid,.operation-grid{grid-template-columns:1fr}
      .faq-intro{margin-bottom:28px}
      .download-panel{grid-template-columns:1fr;padding:34px 28px}
      .footer-body{grid-template-columns:1fr 1fr}
      .footer-body>div:first-child{grid-column:1/-1}
    }
    @media(max-width:520px){
      .nav-wrap{height:66px}
      .brand{min-width:0}
      .brand strong{font-size:14px}
      .nav-download{display:none}
      .page-head h1{font-size:31px}
      .lead{font-size:16px}
      .section-head h2,.notice-copy h2,.faq-intro h2{font-size:27px}
      .route{grid-template-columns:1fr}
      .route-step,.route-step:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}
      .route-step:last-child{border-bottom:0}
      .article-item{grid-template-columns:38px 1fr;padding:19px 17px}
      .article-item .read-link{grid-column:2}
      .interface-card{grid-template-columns:1fr;padding:22px}
      .screen{min-height:180px}
      .operation{padding:19px}
      .download-panel h2{font-size:27px}
      .download-actions{align-items:stretch;flex-direction:column}
      .download-actions .btn{width:100%}
      .qr{display:none}
      .footer-download .container,.footer-bottom{align-items:flex-start;flex-direction:column}
      .footer-body{grid-template-columns:1fr;gap:27px}
      .footer-body>div:first-child{grid-column:auto}
    }

/* roulang page: category3 */
:root{--lime:#b9ed32;--lime-deep:#91bd11;--ink:#20231e;--ink2:#343930;--paper:#fffdf8;--sand:#f3f0e8;--sand2:#ebe6da;--muted:#73776d;--line:#ded9cd;--orange:#ee9d62;--orange-bg:#fff0e4;--dark:#1f251f;--dark2:#2c352b;--radius:18px;--radius-sm:12px;--shadow:0 16px 38px rgba(34,38,29,.08);--max:1200px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    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:40;background:rgba(255,253,248,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .nav-wrap{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:10px;min-width:236px}
    .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--ink);color:var(--lime);display:grid;place-items:center;font-size:22px;font-weight:900}
    .brand strong{display:block;font-size:15px;line-height:1.15;letter-spacing:-.4px}
    .brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:1.1px;text-transform:uppercase}
    .nav{display:flex;align-items:center;gap:3px;margin-left:auto}
    .nav a{padding:10px 12px;border-radius:9px;color:#5c6258;font-size:14px;font-weight:700;white-space:nowrap;position:relative;transition:.2s}
    .nav a:hover,.nav a.active{color:var(--ink);background:#eff8cf}
    .nav a.active:after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--lime-deep);border-radius:2px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 19px;border:1px solid transparent;border-radius:11px;font-weight:800;transition:transform .2s,background .2s,box-shadow .2s}
    .btn:hover{transform:translateY(-2px);box-shadow:0 10px 20px rgba(30,37,19,.12)}
    .btn:focus-visible,.nav a:focus-visible,.faq-q:focus-visible,input:focus-visible{outline:3px solid rgba(185,237,50,.58);outline-offset:3px}
    .btn-primary{background:var(--lime);color:#1f2913}
    .btn-primary:hover{background:#c8f54f}
    .btn-outline{border-color:#c8c5ba;background:transparent;color:var(--ink)}
    .btn-outline:hover{background:#fff}
    .nav-download{margin-left:4px;white-space:nowrap}
    .menu-btn{display:none;border:0;background:var(--sand);width:42px;height:42px;border-radius:10px;font-size:20px}
    main section{padding:82px 0}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:#5e6e24;font-size:12px;font-weight:900;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--lime-deep)}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(36px,5vw,56px);line-height:1.16;letter-spacing:-2px;margin:16px 0 18px;font-weight:900}
    h2{font-size:clamp(28px,3.5vw,36px);line-height:1.25;letter-spacing:-1px;margin-bottom:12px;font-weight:900}
    h3{font-size:20px;line-height:1.4;margin-bottom:9px}
    .lead{font-size:17px;color:#60655c;max-width:690px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:30px}
    .section-head p{color:var(--muted);margin:0;max-width:540px}
    .tag{display:inline-flex;align-items:center;min-height:26px;padding:2px 9px;border-radius:99px;background:#edf7cd;color:#596a1f;font-size:12px;font-weight:800}
    .tag.orange{background:var(--orange-bg);color:#a45e2f}
    .page-head{padding:66px 0 54px;background:linear-gradient(135deg,#f7f4eb,#fffdf8 58%,#edf5d7);border-bottom:1px solid var(--line)}
    .head-row{display:flex;justify-content:space-between;align-items:end;gap:40px}
    .head-meta{min-width:245px;padding:20px 22px;background:#fff;border:1px solid var(--line);border-radius:16px}
    .head-meta span{display:block;color:var(--muted);font-size:13px}
    .head-meta b{display:block;font-size:18px;margin-top:3px}
    .filter-bar{display:flex;flex-wrap:wrap;gap:9px;margin-top:28px}
    .filter{padding:7px 13px;border:1px solid var(--line);border-radius:99px;background:#fff;color:#5d6558;font-size:13px}
    .filter.selected{background:var(--lime);border-color:var(--lime);color:#293317;font-weight:800}
    .feature-wide{display:grid;grid-template-columns:1.08fr .92fr;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow)}
    .feature-cover{min-height:310px;background:linear-gradient(145deg,#2c382b,#596d3f);position:relative;padding:28px;color:#fff;display:flex;align-items:end}
    .cover-shape{position:absolute;width:180px;height:180px;border:26px solid rgba(185,237,50,.75);border-radius:50%;right:14%;top:16%;transform:rotate(22deg)}
    .cover-lines{position:absolute;left:28px;top:30px;width:150px}
    .cover-lines i{height:8px;background:rgba(255,255,255,.32);display:block;margin-bottom:13px;border-radius:8px}
    .cover-lines i:nth-child(2){width:72%}.cover-lines i:nth-child(3){width:48%}
    .cover-caption{position:relative;z-index:1}
    .cover-caption small{color:#dce9b2}
    .feature-info{padding:34px}
    .feature-info p{color:var(--muted);max-width:480px}
    .article-link{color:#5b7415;font-weight:900;font-size:14px}
    .list-panel{background:var(--sand);border-radius:var(--radius);padding:24px}
    .content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .content-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;min-height:205px;display:flex;flex-direction:column;transition:.25s}
    .content-card:hover,.rank-item:hover,.activity-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c8c3b6}
    .content-card p{font-size:14px;color:var(--muted);margin-bottom:18px}
    .card-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px}
    .topic-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .topic{padding:22px;background:#fff;border:1px solid var(--line);border-radius:14px}
    .topic-icon{width:38px;height:38px;border-radius:11px;background:#eff8cf;color:#536c12;display:grid;place-items:center;font-weight:900;margin-bottom:15px}
    .topic p{font-size:13px;color:var(--muted);margin:0}
    .reading-list{display:grid;grid-template-columns:1fr 1fr;gap:0 34px;border-top:1px solid var(--line)}
    .reading-item{display:grid;grid-template-columns:42px 1fr;gap:15px;padding:22px 0;border-bottom:1px solid var(--line)}
    .number{font-size:25px;font-weight:900;color:#a8c92b}
    .reading-item p{font-size:13px;color:var(--muted);margin:4px 0 9px}
    .activity-bar{display:flex;gap:0;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff}
    .activity-item{flex:1;padding:23px;border-right:1px solid var(--line);transition:.25s}
    .activity-item:last-child{border-right:0}
    .activity-item time{display:block;font-size:13px;color:var(--muted);margin-bottom:9px}
    .faq-wrap{max-width:900px;border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-q{width:100%;padding:21px 4px;border:0;background:none;display:flex;justify-content:space-between;text-align:left;font-weight:800;color:var(--ink)}
    .faq-q span:last-child{font-size:22px;color:var(--lime-deep);transition:.2s}
    .faq-a{display:none;padding:0 40px 22px 4px;color:var(--muted);font-size:15px}
    .faq-item.open .faq-a{display:block}
    .faq-item.open .faq-q span:last-child{transform:rotate(45deg)}
    .more-row{margin-top:27px;display:flex;justify-content:space-between;align-items:center;gap:20px}
    .more-row p{margin:0;color:var(--muted);font-size:14px}
    .download-cta{background:var(--dark);color:#fff;border-radius:24px;padding:42px 48px;display:flex;justify-content:space-between;align-items:center;gap:30px}
    .download-cta p{color:#cbd2c4;margin:8px 0 0;max-width:620px}
    .download-cta .btn{flex:none}
    .site-footer{background:var(--dark);color:#c8cec2}
    .footer-download{border-bottom:1px solid rgba(255,255,255,.12);padding:18px 0}
    .footer-download .container{display:flex;justify-content:space-between;align-items:center;gap:20px}
    .footer-app{display:flex;align-items:center;gap:12px}
    .footer-icon{width:40px;height:40px;border-radius:12px;background:var(--lime);color:#263016;display:grid;place-items:center;font-size:22px;font-weight:900}
    .footer-app b{display:block;color:#fff;font-size:14px}.footer-app span{display:block;font-size:12px;color:#aeb7a8}
    .footer-body{display:grid;grid-template-columns:1.5fr .8fr 1.2fr;gap:60px;padding:45px 0}
    .footer-brand{font-size:21px;font-weight:900;color:#fff}.footer-brand small{display:block;color:var(--lime);font-size:11px;letter-spacing:1px}
    .footer-body p{font-size:13px;line-height:1.8;color:#aeb7a8;max-width:360px}
    .footer-body ul{padding:0;margin:12px 0 0;list-style:none}.footer-body li{margin:7px 0;font-size:13px}.footer-body a:hover{color:var(--lime)}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:17px 0;display:flex;justify-content:space-between;font-size:12px;color:#929c8e}.back-top:hover{color:var(--lime)}
    @media(max-width:1024px){.nav-wrap{gap:14px}.brand{min-width:205px}.nav a{padding:9px 8px}.content-grid{grid-template-columns:repeat(2,1fr)}.activity-bar{display:grid;grid-template-columns:repeat(2,1fr)}.activity-item:nth-child(2){border-right:0}.activity-item:nth-child(-n+2){border-bottom:1px solid var(--line)}}
    @media(max-width:768px){.container{width:min(var(--max),calc(100% - 32px))}.nav{display:none;position:absolute;top:76px;left:0;right:0;background:var(--paper);padding:14px 16px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}.nav.open{display:flex;flex-direction:column;align-items:stretch}.nav a{padding:12px 14px}.nav-download{display:none}.menu-btn{display:block;margin-left:auto}.nav-wrap{height:68px}.page-head{padding:48px 0 40px}.head-row{display:block}.head-meta{margin-top:25px}.feature-wide{grid-template-columns:1fr}.feature-cover{min-height:220px}.download-cta{padding:32px 25px;display:block}.download-cta .btn{margin-top:22px}.footer-body{grid-template-columns:1fr 1fr;gap:30px}}
    @media(max-width:520px){main section{padding:58px 0}h1{font-size:34px;letter-spacing:-1px}.section-head{display:block}.section-head p{margin-top:10px}.content-grid,.topic-strip,.reading-list{grid-template-columns:1fr}.list-panel{padding:15px}.feature-info{padding:25px}.activity-bar{display:block}.activity-item{border-right:0!important;border-bottom:1px solid var(--line)}.activity-item:last-child{border-bottom:0}.footer-download .container{align-items:flex-start;flex-direction:column}.footer-body{grid-template-columns:1fr;padding:35px 0}.footer-bottom{display:block}.back-top{display:block;margin-top:8px}.more-row{display:block}.more-row .btn{margin-top:15px;width:100%}}