/* roulang page: index */
:root{
            --ink:#171717;
            --ink-soft:#292725;
            --paper:#f7f4ee;
            --paper-2:#fffdf9;
            --line:#ded8ce;
            --muted:#746e65;
            --orange:#f05a3c;
            --orange-dark:#c9412b;
            --mint:#b9f2d3;
            --mint-dark:#2d8b69;
            --yellow:#ffd36c;
            --radius:18px;
            --shadow:0 16px 40px rgba(31,25,20,.09);
            --container:1180px;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:15px}
        a{color:inherit;text-decoration:none}
        img{max-width:100%;display:block}
        button,input{font:inherit}
        button{cursor:pointer}
        :focus-visible{outline:3px solid var(--yellow);outline-offset:3px}
        .container{width:min(var(--container),calc(100% - 48px));margin:auto}
        .site-header{background:var(--ink);color:#fff;position:relative;z-index:10}
        .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
        .brand{display:inline-flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
        .brand-mark{width:38px;height:38px;border-radius:11px;background:var(--orange);display:grid;place-items:center;color:#fff;font-size:20px;font-weight:900;transform:rotate(-5deg)}
        .brand-text{font-size:16px}
        .brand-text em{color:#ff967f;font-style:normal}
        .main-nav{display:flex;align-items:center;gap:5px}
        .main-nav a{padding:10px 15px;border-radius:9px;color:#d7d2ca;transition:.2s ease;position:relative}
        .main-nav a:hover,.main-nav a.active{color:#fff;background:#302e2b}
        .main-nav a.active:after{content:"";position:absolute;height:3px;left:15px;right:15px;bottom:2px;background:var(--orange);border-radius:4px}
        .nav-entry{background:var(--orange)!important;color:#fff!important;margin-left:8px;font-weight:700}
        .nav-entry:hover{background:var(--orange-dark)!important;transform:translateY(-2px)}
        .menu-toggle{display:none;background:none;border:1px solid #625d56;color:#fff;border-radius:8px;padding:8px 11px}
        .hero{background:var(--ink);color:#fff;padding:76px 0 92px;overflow:hidden;position:relative}
        .hero:before{content:"";position:absolute;width:420px;height:420px;border:1px solid rgba(255,255,255,.13);border-radius:50%;right:8%;top:-180px}
        .hero:after{content:"";position:absolute;width:180px;height:180px;background:var(--orange);border-radius:50%;right:13%;bottom:-95px;opacity:.9}
        .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:76px;align-items:center;position:relative;z-index:1}
        .eyebrow,.section-kicker{font-size:12px;letter-spacing:.15em;text-transform:uppercase;font-weight:800}
        .eyebrow{color:var(--mint);margin-bottom:20px}
        h1{font-size:clamp(38px,5.2vw,68px);line-height:1.14;letter-spacing:-.055em;max-width:720px}
        .hero-copy{color:#c8c1b7;font-size:17px;max-width:610px;margin:24px 0 30px}
        .actions{display:flex;gap:12px;flex-wrap:wrap}
        .btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:10px;border:1px solid transparent;font-weight:800;transition:.2s ease}
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px)}
        .btn-light{background:#fff;color:var(--ink)}
        .btn-light:hover{background:var(--mint);transform:translateY(-2px)}
        .btn-outline{border-color:var(--line);background:transparent}
        .btn-outline:hover{border-color:var(--orange);color:var(--orange)}
        .hero-board{min-height:330px;background:#282623;border:1px solid #4a4540;border-radius:24px;padding:24px;position:relative;box-shadow:0 24px 60px rgba(0,0,0,.25)}
        .board-top{display:flex;justify-content:space-between;color:#aaa39a;font-size:12px;border-bottom:1px solid #48433e;padding-bottom:15px}
        .board-title{font-size:31px;line-height:1.2;margin:37px 0 26px;max-width:300px}
        .board-title strong{color:var(--yellow)}
        .board-row{display:flex;justify-content:space-between;align-items:center;border-top:1px solid #48433e;padding:16px 0;color:#d7d0c7}
        .status{font-size:12px;padding:4px 9px;border-radius:20px;background:var(--mint);color:#22684f;font-weight:800}
        .status.next{background:var(--yellow);color:#72500b}
        .section{padding:88px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:35px}
        .section-kicker{color:var(--orange-dark);margin-bottom:9px}
        h2{font-size:clamp(27px,3.2vw,42px);line-height:1.2;letter-spacing:-.04em}
        .section-intro{color:var(--muted);max-width:430px}
        .activity-area{background:var(--paper-2)}
        .activity-list{border-top:1px solid var(--line)}
        .activity-item{display:grid;grid-template-columns:80px 155px 1fr 130px 105px;gap:22px;align-items:center;padding:24px 0;border-bottom:1px solid var(--line);transition:.2s}
        .activity-item:hover{padding-left:12px;background:#fff8ef}
        .activity-no{font-size:25px;font-weight:900;color:var(--orange)}
        .activity-type{color:var(--muted);font-size:13px}
        .activity-name{font-size:18px;font-weight:800}
        .activity-date{color:var(--muted);font-size:13px}
        .arrow-link{font-weight:800;color:var(--orange-dark);white-space:nowrap}
        .arrow-link:after{content:" →";transition:.2s}
        .arrow-link:hover:after{padding-left:5px}
        .path-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:16px}
        .path-card{min-height:190px;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper-2);display:flex;flex-direction:column;justify-content:space-between;transition:.25s}
        .path-card:first-child{background:var(--orange);color:#fff;border-color:var(--orange)}
        .path-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
        .path-label{font-size:12px;letter-spacing:.08em;font-weight:800;opacity:.75}
        .path-card h3{font-size:25px;line-height:1.25;margin-top:20px}
        .path-card p{font-size:14px;color:var(--muted);margin-top:8px}
        .path-card:first-child p{color:#ffe5dc}
        .news-section{background:#eee9e1}
        .news-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:70px}
        .news-note{font-size:18px;color:var(--muted);max-width:300px}
        .news-list{background:var(--paper-2);border-radius:var(--radius);padding:0 26px}
        .news-item{display:grid;grid-template-columns:115px 1fr 75px;gap:18px;align-items:start;padding:23px 0;border-bottom:1px solid var(--line)}
        .news-item:last-child{border-bottom:0}
        .news-meta{color:var(--muted);font-size:12px}
        .news-title{font-size:17px;font-weight:800;display:block;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
        .news-excerpt{font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .news-more{font-size:13px;color:var(--orange-dark);font-weight:800}
        .empty-state{padding:45px 10px;text-align:center;color:var(--muted)}
        .download{padding-top:70px}
        .download-panel{background:var(--ink);color:#fff;border-radius:25px;padding:54px 62px;display:grid;grid-template-columns:1fr .75fr;gap:50px;align-items:center;overflow:hidden;position:relative}
        .download-panel:after{content:"C7";position:absolute;right:-10px;bottom:-65px;font-size:260px;font-weight:900;color:rgba(255,255,255,.035);line-height:1}
        .download-panel h2{max-width:480px}
        .download-panel p{color:#c5beb5;max-width:520px;margin:17px 0 24px}
        .download-info{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:25px}
        .info-tag{border:1px solid #57514a;border-radius:7px;padding:7px 11px;color:#ddd5ca;font-size:12px}
        .qr-zone{display:flex;align-items:center;gap:22px;position:relative;z-index:1}
        .qr{width:148px;height:148px;background:#fff;border-radius:12px;display:grid;place-items:center;color:var(--ink);font-size:13px;text-align:center;padding:18px}
        .qr:before{content:"二维码\\A位置";white-space:pre;font-weight:900;line-height:1.6;border:2px dashed #777;padding:18px 10px;border-radius:5px}
        .qr-tip{color:#bbb3a9;font-size:13px;max-width:150px}
        .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px}
        .step{border-top:2px solid var(--orange);padding-top:16px}
        .step b{font-size:28px;color:var(--orange)}
        .step h3{font-size:16px;margin:7px 0}
        .step p{font-size:13px;color:var(--muted)}
        .faq-section{background:var(--paper-2)}
        .faq-list{max-width:850px;margin:auto;border-top:1px solid var(--line)}
        details{border-bottom:1px solid var(--line);padding:20px 0}
        summary{cursor:pointer;list-style:none;font-weight:800;font-size:17px;display:flex;justify-content:space-between;gap:20px}
        summary::-webkit-details-marker{display:none}
        summary:after{content:"+";color:var(--orange);font-size:23px;line-height:1}
        details[open] summary:after{content:"−"}
        details p{color:var(--muted);padding:13px 35px 0 0;max-width:700px}
        .cta{padding:72px 0}
        .cta-box{background:var(--mint);border-radius:var(--radius);padding:42px 48px;display:flex;align-items:center;justify-content:space-between;gap:25px}
        .cta-box p{color:#39735b;margin-top:7px}
        .site-footer{background:var(--ink);color:#fff;padding:52px 0 25px}
        .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px;padding-bottom:42px}
        .footer-brand p{color:#aaa39a;max-width:280px;margin-top:16px;font-size:13px}
        .footer-col h3{font-size:14px;margin-bottom:15px;color:#fff}
        .footer-col a{display:block;color:#aaa39a;font-size:13px;margin:9px 0;transition:.2s}
        .footer-col a:hover{color:var(--orange)}
        .copyright{border-top:1px solid #3c3935;padding-top:20px;color:#817b73;font-size:12px;display:flex;justify-content:space-between;gap:15px}
        @media(max-width:1024px){
            .hero-grid{gap:35px}.path-grid{grid-template-columns:1fr 1fr}.path-card:first-child{grid-column:span 2}
            .activity-item{grid-template-columns:60px 130px 1fr 100px}
            .activity-item .arrow-link{grid-column:4}
            .news-layout{gap:35px}
        }
        @media(max-width:768px){
            .container{width:min(var(--container),calc(100% - 32px))}
            .nav-wrap{height:68px}.menu-toggle{display:block}.main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--ink);padding:10px 16px 18px;flex-direction:column;align-items:stretch;border-top:1px solid #3b3834}
            .main-nav.open{display:flex}.main-nav a{padding:13px 12px}.nav-entry{margin:5px 0 0}
            .hero{padding:55px 0 65px}.hero-grid{grid-template-columns:1fr}.hero-board{min-height:280px}.hero:before{right:-180px}
            .section{padding:65px 0}.section-head{display:block}.section-intro{margin-top:12px}
            .activity-item{grid-template-columns:48px 1fr;gap:5px 15px;padding:20px 0}.activity-type{grid-column:2}.activity-name{grid-column:2}.activity-date{grid-column:2}.activity-item .arrow-link{grid-column:2}
            .path-grid{grid-template-columns:1fr}.path-card:first-child{grid-column:auto}
            .news-layout{grid-template-columns:1fr}.news-note{max-width:none}.news-list{padding:0 17px}
            .news-item{grid-template-columns:80px 1fr}.news-more{grid-column:2}.download-panel{grid-template-columns:1fr;padding:35px 25px}.qr-zone{justify-content:flex-start}
            .steps{grid-template-columns:1fr}.cta-box{display:block;padding:32px 25px}.cta-box .btn{margin-top:20px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:span 2}.copyright{display:block}.copyright span{display:block;margin-top:7px}
        }
        @media(max-width:520px){
            h1{font-size:38px}.hero-copy{font-size:15px}.actions .btn{width:100%}.hero-board{padding:19px}.board-title{font-size:26px}
            .qr-zone{display:block}.qr{margin-bottom:14px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
        }

/* roulang page: index */
:root{
            --coral:#e76548;
            --coral-dark:#c94e36;
            --olive:#a8b85b;
            --ink:#242126;
            --muted:#746e6a;
            --paper:#f5f1eb;
            --cream:#fffdf9;
            --line:#ded6cc;
            --deep:#29262d;
            --shadow:0 16px 40px rgba(51,39,30,.09);
            --radius:18px;
            --max:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;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(calc(100% - 48px),var(--max));margin:auto}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(245,241,235,.94);border-bottom:1px solid rgba(222,214,204,.8);backdrop-filter:blur(12px)}
        .nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:30px}
        .brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
        .brand-mark{width:38px;height:38px;background:var(--coral);color:#fff;border-radius:11px;display:grid;place-items:center;font-weight:900;font-size:17px;box-shadow:4px 4px 0 #f2b49d}
        .brand-text{font-size:15px}
        .brand-text b{display:block;font-size:17px}
        .brand-text span{display:block;color:var(--muted);font-size:11px;letter-spacing:.08em;margin-top:-3px}
        .nav-links{display:flex;align-items:center;gap:8px}
        .nav-links a{padding:9px 14px;border-radius:9px;color:#625b57;font-size:14px;transition:.25s}
        .nav-links a:hover,.nav-links a.active{background:var(--cream);color:var(--coral-dark);box-shadow:0 3px 12px rgba(65,44,31,.06)}
        .nav-app{background:var(--deep)!important;color:#fff!important;padding:10px 17px!important}
        .nav-app:hover{background:var(--coral)!important;transform:translateY(-2px)}
        .menu-toggle{display:none;border:0;background:transparent;font-size:25px;color:var(--ink)}
        .hero{padding:82px 0 72px;overflow:hidden}
        .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:72px;align-items:center}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:9px;color:var(--coral-dark);font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
        .eyebrow:before,.section-kicker:before{content:"";width:25px;height:2px;background:var(--coral)}
        h1,h2,h3,p{margin-top:0}
        h1{font-size:clamp(40px,5.2vw,70px);line-height:1.1;letter-spacing:-.065em;margin:19px 0 25px;max-width:700px}
        .hero-copy{font-size:17px;color:var(--muted);max-width:590px;margin-bottom:31px}
        .actions{display:flex;gap:13px;flex-wrap:wrap}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:1px solid transparent;border-radius:10px;padding:13px 20px;font-weight:750;font-size:14px;transition:.25s}
        .btn-primary{background:var(--coral);color:#fff;box-shadow:0 7px 0 #bd4f39}
        .btn-primary:hover{background:var(--coral-dark);transform:translateY(2px);box-shadow:0 4px 0 #a94331}
        .btn-outline{border-color:var(--line);background:var(--cream);color:var(--ink)}
        .btn-outline:hover{border-color:var(--coral);color:var(--coral-dark);transform:translateY(-2px)}
        .hero-art{min-height:390px;position:relative;background:var(--deep);border-radius:26px;padding:28px;overflow:hidden;color:#fff;box-shadow:var(--shadow)}
        .hero-art:before{content:"";position:absolute;width:290px;height:290px;border-radius:50%;background:var(--coral);right:-70px;top:-85px}
        .hero-art:after{content:"";position:absolute;width:210px;height:210px;border:1px solid rgba(255,255,255,.2);border-radius:50%;right:25px;top:15px}
        .art-top{position:relative;z-index:1;display:flex;justify-content:space-between;font-size:12px;color:#d9d0cb;letter-spacing:.08em}
        .art-title{position:absolute;z-index:1;left:30px;bottom:34px;font-size:42px;line-height:1.1;font-weight:850;letter-spacing:-.06em}
        .art-title em{display:block;color:#d6e18c;font-style:normal}
        .art-index{position:absolute;right:28px;bottom:30px;font-size:78px;line-height:1;font-weight:900;color:rgba(255,255,255,.13)}
        .feature-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;grid-template-columns:repeat(3,1fr);background:rgba(255,253,249,.52)}
        .feature-item{padding:22px 26px;display:flex;align-items:center;gap:18px;border-right:1px solid var(--line);transition:.25s}
        .feature-item:last-child{border-right:0}
        .feature-item:hover{background:var(--cream)}
        .feature-no{font-size:27px;font-weight:900;color:var(--coral)}
        .feature-item strong{display:block;font-size:15px}
        .feature-item span{display:block;color:var(--muted);font-size:12px}
        .section{padding:94px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:32px}
        h2{font-size:clamp(28px,3.5vw,43px);line-height:1.18;letter-spacing:-.05em;margin:12px 0 0}
        .section-intro{max-width:470px;color:var(--muted);font-size:14px;margin:0}
        .activity-board{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}
        .activity-main,.activity-side{background:var(--cream);border:1px solid var(--line);border-radius:var(--radius);padding:29px;position:relative;overflow:hidden}
        .activity-main{min-height:275px;background:#e6e8c5}
        .activity-main:after{content:"C7";position:absolute;right:-8px;bottom:-40px;font-size:190px;font-weight:900;color:rgba(255,255,255,.42);line-height:1}
        .status{display:inline-block;padding:5px 10px;border-radius:5px;background:var(--olive);color:#26301b;font-size:11px;font-weight:800}
        .status.next{background:#f1bf76}
        .activity-main h3{position:relative;z-index:1;font-size:29px;max-width:390px;margin:28px 0 8px;letter-spacing:-.04em}
        .activity-main p,.activity-side p{position:relative;z-index:1;color:#655f54;font-size:14px;max-width:440px}
        .activity-side{display:flex;flex-direction:column;justify-content:space-between}
        .activity-side h3{font-size:21px;line-height:1.3;margin:18px 0 6px}
        .date{font-size:12px;color:var(--muted)}
        .text-link{color:var(--coral-dark);font-weight:750;font-size:13px}
        .text-link:hover{text-decoration:underline}
        .news-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:start}
        .news-lead{border-left:4px solid var(--coral);padding:2px 0 4px 25px}
        .news-lead h3{font-size:28px;line-height:1.3;letter-spacing:-.04em;margin:16px 0 12px}
        .news-lead p{color:var(--muted);font-size:14px}
        .news-list{border-top:1px solid var(--line)}
        .news-row{display:grid;grid-template-columns:84px 1fr auto;gap:18px;align-items:center;padding:19px 0;border-bottom:1px solid var(--line);transition:.2s}
        .news-row:hover{padding-left:7px;background:rgba(255,253,249,.45)}
        .news-meta{font-size:11px;color:var(--muted)}
        .news-meta b{display:block;color:var(--coral-dark);font-size:12px;margin-bottom:3px}
        .news-row h3{font-size:16px;margin:0 0 3px}
        .news-row p{font-size:12px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
        .arrow{font-size:20px;color:var(--coral);transition:.2s}
        .news-row:hover .arrow{transform:translateX(4px)}
        .app-section{background:var(--deep);color:#fff;padding:75px 0;position:relative;overflow:hidden}
        .app-section:after{content:"";position:absolute;width:430px;height:430px;border:1px solid rgba(255,255,255,.1);border-radius:50%;right:-120px;top:-170px}
        .app-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;position:relative;z-index:1}
        .app-section .section-kicker{color:#d6e18c}
        .app-section .section-kicker:before{background:#d6e18c}
        .app-section h2{max-width:510px}
        .app-copy{color:#cfc7c2;max-width:510px;margin:20px 0 27px}
        .app-info{display:flex;gap:14px;flex-wrap:wrap;margin-top:22px;color:#aaa19c;font-size:12px}
        .device-stage{height:310px;display:flex;justify-content:center;align-items:center}
        .device{width:180px;height:300px;background:#141217;border:7px solid #5d555e;border-radius:27px;box-shadow:25px 22px 0 rgba(0,0,0,.22);padding:15px 10px;transform:rotate(7deg)}
        .device-screen{height:100%;border-radius:16px;background:var(--coral);padding:17px 13px;position:relative;overflow:hidden}
        .device-screen:after{content:"C7";position:absolute;bottom:-15px;right:-5px;font-size:100px;font-weight:900;color:rgba(255,255,255,.16)}
        .screen-line{height:7px;background:rgba(255,255,255,.6);width:70%;border-radius:5px;margin-bottom:10px}
        .screen-card{height:75px;background:#fff2df;border-radius:9px;margin-top:26px}
        .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:34px}
        .step{border-top:1px solid rgba(255,255,255,.25);padding-top:13px;color:#cfc7c2;font-size:13px}
        .step b{display:block;color:#d6e18c;font-size:21px;margin-bottom:5px}
        .faq-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:80px}
        .faq-list{border-top:1px solid var(--line)}
        details{border-bottom:1px solid var(--line);padding:18px 0}
        summary{cursor:pointer;font-weight:750;list-style:none;display:flex;justify-content:space-between;gap:20px}
        summary::-webkit-details-marker{display:none}
        summary:after{content:"+";color:var(--coral);font-size:22px;line-height:1}
        details[open] summary:after{content:"−"}
        details p{color:var(--muted);font-size:14px;margin:12px 35px 0 0}
        .cta{background:var(--coral);color:#fff;padding:40px 48px;border-radius:var(--radius);display:flex;justify-content:space-between;align-items:center;gap:30px}
        .cta h2{font-size:30px;margin:0 0 8px}
        .cta p{margin:0;color:#ffe7df;font-size:14px}
        .cta .btn{background:#fff;color:var(--coral-dark);box-shadow:none}
        .cta .btn:hover{background:#fff3ed}
        .site-footer{background:#242126;color:#d8d0cc;padding:52px 0 25px}
        .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.14)}
        .footer-brand{font-size:18px;font-weight:800;color:#fff}
        .footer-copy{color:#9e9692;font-size:13px;max-width:330px;margin-top:14px}
        .footer-title{color:#fff;font-weight:750;font-size:13px;margin-bottom:14px}
        .footer-links{display:flex;flex-direction:column;gap:8px;color:#a9a19d;font-size:13px}
        .footer-links a:hover{color:#f4b39f}
        .copyright{display:flex;justify-content:space-between;gap:20px;padding-top:20px;color:#89817d;font-size:11px}
        :focus-visible{outline:3px solid #d6e18c;outline-offset:3px}
        @media(max-width:900px){
            .nav-links{gap:2px}.nav-links a{padding:8px 9px}
            .hero-grid,.app-grid{grid-template-columns:1fr;gap:38px}
            .hero{padding-top:62px}.hero-art{min-height:320px}
            .activity-board,.news-layout,.faq-grid{grid-template-columns:1fr;gap:28px}
            .app-grid{gap:15px}.device-stage{margin-top:10px}
        }
        @media(max-width:680px){
            .container{width:min(calc(100% - 32px),var(--max))}
            .nav{height:68px}.brand-text b{font-size:14px}.brand-text span{display:none}.brand-mark{width:34px;height:34px}
            .menu-toggle{display:block}.nav-links{display:none;position:absolute;left:16px;right:16px;top:76px;padding:10px;background:var(--cream);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
            .nav-links.open{display:flex}.nav-links a{padding:12px 14px}.nav-app{text-align:center}
            h1{font-size:41px}.hero{padding:51px 0}.hero-copy{font-size:15px}
            .hero-art{min-height:270px;padding:22px}.art-title{left:23px;bottom:25px;font-size:31px}.art-index{font-size:58px;right:20px;bottom:25px}
            .feature-strip{grid-template-columns:1fr}.feature-item{border-right:0;border-bottom:1px solid var(--line);padding:16px 19px}.feature-item:last-child{border-bottom:0}
            .section{padding:65px 0}.section-head{display:block}.section-intro{margin-top:15px}
            .activity-main,.activity-side{padding:22px}.activity-main h3{font-size:24px;margin-top:22px}
            .news-row{grid-template-columns:67px 1fr 16px;gap:10px}.news-row p{display:none}.news-row h3{font-size:14px}
            .app-section{padding:60px 0}.app-grid{display:flex;flex-direction:column}.device-stage{order:-1;height:250px}.device{transform:rotate(5deg) scale(.82)}
            .steps{gap:10px}.step{font-size:12px}.faq-grid{gap:32px}
            .cta{padding:29px 24px;display:block}.cta .btn{margin-top:20px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:8px}
        }

/* roulang page: article */
:root{
            --ink:#171717;
            --ink-soft:#292725;
            --paper:#f7f4ee;
            --paper-2:#fffdf9;
            --line:#ded8ce;
            --muted:#746e65;
            --orange:#f05a3c;
            --orange-dark:#c9412b;
            --mint:#b9f2d3;
            --mint-dark:#2d8b69;
            --yellow:#ffd36c;
            --radius:18px;
            --shadow:0 16px 40px rgba(31,25,20,.09);
            --container:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:15px}
        a{color:inherit;text-decoration:none}
        a:hover{text-decoration:none}
        img{max-width:100%;display:block}
        button,input{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--container),calc(100% - 48px));margin:auto}
        .site-header{background:var(--ink);color:#fff;position:relative;z-index:10}
        .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
        .brand{display:inline-flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
        .brand-mark{width:38px;height:38px;border-radius:11px;background:var(--orange);display:grid;place-items:center;color:#fff;font-size:20px;font-weight:900;transform:rotate(-5deg)}
        .brand-text{font-size:16px}
        .brand-text em{color:#ff967f;font-style:normal}
        .nav-links{display:flex;align-items:center;gap:5px}
        .nav-links a{padding:10px 15px;border-radius:9px;color:#d7d2ca;transition:.2s ease;position:relative}
        .nav-links a:hover,.nav-links a.active{color:#fff;background:#302e2b}
        .nav-links a.active:after{content:"";position:absolute;height:3px;left:15px;right:15px;bottom:2px;background:var(--orange);border-radius:4px}
        .nav-links .nav-app{background:var(--orange)!important;color:#fff!important;margin-left:8px;font-weight:700}
        .nav-links .nav-app:hover{background:var(--orange-dark)!important;transform:translateY(-2px)}
        .menu-toggle{display:none;background:none;border:1px solid #625d56;color:#fff;border-radius:8px;padding:8px 11px}
        .article-hero{background:var(--ink);color:#fff;padding:54px 0 62px;position:relative;overflow:hidden}
        .article-hero:after{content:"";position:absolute;width:260px;height:260px;border:1px solid rgba(255,255,255,.12);border-radius:50%;right:8%;top:-110px}
        .breadcrumb{position:relative;z-index:1;color:#aaa39a;font-size:13px;margin-bottom:27px}
        .breadcrumb a{color:#d8d0c5;transition:.2s}
        .breadcrumb a:hover{color:var(--mint)}
        .crumb-sep{padding:0 9px;color:#6d675f}
        .article-label{display:inline-flex;align-items:center;gap:8px;color:var(--mint);font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
        .article-label:before{content:"";display:block;width:25px;height:3px;background:var(--orange);border-radius:4px}
        .article-hero h1{max-width:850px;font-size:clamp(32px,5vw,58px);line-height:1.2;letter-spacing:-.04em;margin:17px 0 18px;position:relative;z-index:1}
        .article-summary{max-width:760px;color:#c8c1b7;font-size:17px;margin:0 0 25px;position:relative;z-index:1}
        .article-meta{display:flex;flex-wrap:wrap;gap:10px 25px;color:#aaa39a;font-size:13px;position:relative;z-index:1}
        .meta-chip{border:1px solid #514c46;border-radius:7px;padding:4px 10px;color:#e5ddd2}
        .reading-layout{display:grid;grid-template-columns:minmax(0,820px) 260px;gap:70px;align-items:start;padding:76px 0 84px}
        .article-content{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(28px,5vw,58px);box-shadow:var(--shadow);font-size:16px}
        .article-content h2{font-size:29px;line-height:1.35;margin:34px 0 15px}
        .article-content h3{font-size:21px;line-height:1.4;margin:28px 0 12px}
        .article-content p{margin:0 0 19px;color:#3d3935}
        .article-content ul,.article-content ol{padding-left:25px;margin:15px 0 24px;color:#3d3935}
        .article-content li{margin:7px 0}
        .article-content blockquote{margin:27px 0;padding:20px 24px;border-left:4px solid var(--orange);background:#fff2e9;color:#62564d}
        .article-content img{border-radius:12px;margin:25px auto}
        .article-content figcaption{text-align:center;color:var(--muted);font-size:13px;margin-top:-15px}
        .article-content table{width:100%;border-collapse:collapse;margin:24px 0;background:#fff}
        .article-content th,.article-content td{border:1px solid var(--line);padding:12px;text-align:left}
        .article-content th{background:#f4eee5;font-weight:800}
        .article-side{position:sticky;top:25px}
        .side-card{background:var(--paper-2);border:1px solid var(--line);border-radius:14px;padding:22px;margin-bottom:16px}
        .side-kicker{font-size:12px;color:var(--orange-dark);font-weight:800;letter-spacing:.12em;margin-bottom:10px}
        .side-card h3{font-size:19px;margin:0 0 12px}
        .side-card p{font-size:13px;color:var(--muted);margin:0 0 16px}
        .side-link{display:block;border-top:1px solid var(--line);padding:11px 0;font-weight:700;font-size:14px}
        .side-link:hover{color:var(--orange-dark);padding-left:4px}
        .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:10px;border:1px solid transparent;font-weight:800;transition:.2s ease}
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}
        .btn-outline{border-color:var(--line);background:transparent}
        .btn-outline:hover{border-color:var(--orange);color:var(--orange)}
        .article-end{display:flex;flex-wrap:wrap;gap:12px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
        .notice{margin-top:30px;background:var(--mint);border-radius:13px;padding:19px 21px;color:#285d49;font-size:14px}
        .cta{padding:0 0 82px}
        .cta-box{background:var(--mint);border-radius:var(--radius);padding:38px 48px;display:flex;align-items:center;justify-content:space-between;gap:25px}
        .cta-box h2{margin:0;font-size:28px;line-height:1.3}
        .cta-box p{color:#39735b;margin:7px 0 0}
        .site-footer{background:var(--ink);color:#fff;padding:52px 0 25px}
        .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px;padding-bottom:42px}
        .footer-brand{font-size:18px;font-weight:800;margin-bottom:12px}
        .footer-copy{color:#aaa39a;max-width:420px;margin:0;font-size:14px}
        .footer-title{font-weight:800;margin-bottom:13px}
        .footer-links{display:flex;flex-direction:column;gap:8px;color:#aaa39a;font-size:14px}
        .footer-links a{transition:.2s}
        .footer-links a:hover{color:var(--mint);padding-left:4px}
        .copyright{border-top:1px solid #393633;padding-top:20px;display:flex;justify-content:space-between;gap:20px;color:#89827a;font-size:12px}
        :focus-visible{outline:3px solid var(--yellow);outline-offset:3px}
        @media(max-width:1024px){
            .reading-layout{grid-template-columns:minmax(0,1fr) 220px;gap: thirtypx;gap:35px}
            .hero-grid{gap:35px}
        }
        @media(max-width:768px){
            .container{width:min(var(--container),calc(100% - 32px))}
            .nav-wrap{height:68px}
            .brand-text{font-size:14px}
            .brand-mark{width:34px;height:34px;font-size:18px}
            .menu-toggle{display:block}
            .nav-links{display:none;position:absolute;left:16px;right:16px;top:72px;background:var(--ink-soft);padding:10px;border:1px solid #48433e;border-radius:12px;flex-direction:column;align-items:stretch}
            .nav-links.open{display:flex}
            .nav-links a{padding:12px 14px}
            .nav-links .nav-app{margin-left:0}
            .article-hero{padding:40px 0 48px}
            .article-hero h1{font-size:37px}
            .reading-layout{display:block;padding:45px 0 58px}
            .article-side{position:static;margin-top:22px}
            .side-card{margin-bottom:12px}
            .cta-box{padding:30px 25px;display:block}
            .cta-box .btn{margin-top:20px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
            .footer-grid>div:first-child{grid-column:1/-1}
            .copyright{display:block}
            .copyright span{display:block;margin-top:5px}
        }
        @media(max-width:520px){
            .article-hero h1{font-size:30px}
            .article-summary{font-size:15px}
            .article-content{padding:25px 20px;font-size:15px}
            .article-content h2{font-size:24px}
            .article-content h3{font-size:19px}
            .article-meta{display:block}
            .article-meta>*{display:inline-block;margin:4px 12px 4px 0}
            .footer-grid{grid-template-columns:1fr}
            .footer-grid>div:first-child{grid-column:auto}
            .cta-box h2{font-size:23px}
        }

/* roulang page: category1 */
:root{
        --ink:#171717;
        --ink-soft:#292725;
        --paper:#f7f4ee;
        --paper-2:#fffdf9;
        --line:#ded8ce;
        --muted:#746e65;
        --orange:#f05a3c;
        --orange-dark:#c9412b;
        --mint:#b9f2d3;
        --mint-dark:#2d8b69;
        --yellow:#ffd36c;
        --radius:18px;
        --shadow:0 16px 40px rgba(31,25,20,.09);
        --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    a:hover{text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .site-header{background:var(--ink);color:#fff;position:relative;z-index:10}
    .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:inline-flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .brand-mark{width:38px;height:38px;border-radius:11px;background:var(--orange);display:grid;place-items:center;color:#fff;font-size:20px;font-weight:900;transform:rotate(-5deg)}
    .brand-text{font-size:16px}
    .brand-text em{color:#ff967f;font-style:normal}
    .nav-links{display:flex;align-items:center;gap:5px}
    .nav-links a{padding:10px 15px;border-radius:9px;color:#d7d2ca;transition:.2s ease;position:relative}
    .nav-links a:hover,.nav-links a.active{color:#fff;background:#302e2b}
    .nav-links a.active:after{content:"";position:absolute;height:3px;left:15px;right:15px;bottom:2px;background:var(--orange);border-radius:4px}
    .nav-links .nav-app{background:var(--orange);color:#fff;margin-left:8px;font-weight:700}
    .nav-links .nav-app:hover{background:var(--orange-dark);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:1px solid #625d56;color:#fff;border-radius:8px;padding:8px 11px}
    .page-hero{background:var(--ink);color:#fff;padding:64px 0 72px;position:relative;overflow:hidden}
    .page-hero:after{content:"";position:absolute;width:330px;height:330px;border:1px solid rgba(255,255,255,.14);border-radius:50%;right:8%;top:-180px}
    .page-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end;position:relative;z-index:1}
    .eyebrow,.section-kicker{font-size:12px;letter-spacing:.15em;text-transform:uppercase;font-weight:800}
    .eyebrow{color:var(--mint);margin-bottom:16px}
    h1{font-size:clamp(38px,5vw,64px);line-height:1.12;letter-spacing:-.055em;margin:0;max-width:760px}
    .hero-copy{color:#c8c1b7;font-size:17px;max-width:650px;margin:22px 0 0}
    .hero-note{border-left:3px solid var(--orange);padding:5px 0 5px 22px;color:#ded7cd}
    .hero-note strong{display:block;color:#fff;font-size:27px;line-height:1.2;margin-bottom:7px}
    .hero-note span{color:#aaa39a;font-size:13px}
    .section{padding:86px 0}
    .section-paper{background:var(--paper-2)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:34px}
    .section-kicker{color:var(--orange-dark);margin-bottom:8px}
    h2{font-size:clamp(28px,3vw,42px);line-height:1.2;letter-spacing:-.04em;margin:0}
    .section-intro{color:var(--muted);max-width:460px;margin:0}
    .feature-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:18px}
    .feature-card{min-height:330px;background:var(--orange);color:#fff;border-radius:var(--radius);padding:34px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
    .feature-card:after{content:"01";position:absolute;right:20px;bottom:-28px;font-size:150px;font-weight:900;line-height:1;color:rgba(255,255,255,.12)}
    .feature-card .tag{background:#fff;color:var(--orange-dark)}
    .tag{display:inline-flex;width:max-content;padding:5px 10px;border-radius:7px;border:1px solid var(--line);font-size:12px;font-weight:800}
    .feature-card h3{font-size:30px;line-height:1.3;max-width:550px;margin:22px 0 10px;position:relative;z-index:1}
    .feature-card p{max-width:570px;color:#ffe7df;position:relative;z-index:1}
    .date-line{font-size:13px;color:#ffe0d7;position:relative;z-index:1}
    .news-aside{background:#eee9e1;border-radius:var(--radius);padding:28px}
    .news-aside h3{font-size:20px;margin:0 0 22px}
    .aside-item{padding:17px 0;border-top:1px solid #d3ccc1}
    .aside-item:first-of-type{border-top:0;padding-top:0}
    .aside-item small{color:var(--orange-dark);font-weight:800}
    .aside-item a{display:block;font-weight:800;line-height:1.45;margin-top:5px}
    .aside-item a:hover{color:var(--orange-dark)}
    .filter-row{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:20px}
    .filter-row button{border:1px solid var(--line);background:var(--paper-2);color:var(--muted);border-radius:8px;padding:8px 15px;transition:.2s}
    .filter-row button:hover,.filter-row button.active{background:var(--ink);border-color:var(--ink);color:#fff}
    .news-list{background:var(--paper-2);border-top:1px solid var(--line)}
    .news-item{display:grid;grid-template-columns:125px 1fr 100px;gap:22px;align-items:start;padding:24px 18px;border-bottom:1px solid var(--line);transition:.2s}
    .news-item:hover{background:#fff8ef;padding-left:28px}
    .news-meta{color:var(--muted);font-size:12px}
    .news-meta strong{display:block;color:var(--orange-dark);font-size:13px;margin-bottom:4px}
    .news-title{font-size:18px;font-weight:800;display:block;margin-bottom:5px}
    .news-title:hover{color:var(--orange-dark)}
    .news-summary{color:var(--muted);margin:0;font-size:14px}
    .arrow-link{font-weight:800;color:var(--orange-dark);white-space:nowrap;margin-top:4px}
    .arrow-link:after{content:" →";transition:.2s}
    .arrow-link:hover:after{padding-left:5px}
    .timeline{border-left:2px solid var(--line);margin-left:13px}
    .timeline-item{position:relative;padding:0 0 34px 35px}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-item:before{content:"";position:absolute;left:-8px;top:5px;width:14px;height:14px;border-radius:50%;background:var(--paper);border:4px solid var(--orange)}
    .timeline-item.upcoming:before{border-color:var(--olive,#a8b85b)}
    .timeline-date{font-size:12px;color:var(--orange-dark);font-weight:800}
    .timeline h3{font-size:21px;margin:5px 0}
    .timeline p{color:var(--muted);margin:0;max-width:720px}
    .status{display:inline-block;border-radius:6px;padding:3px 8px;font-size:11px;margin-left:8px;background:var(--mint);color:var(--mint-dark)}
    .status.next{background:#edf0cf;color:#68752c}
    .info-band{background:var(--deep,#29262d);color:#fff;border-radius:var(--radius);padding:35px 40px;display:grid;grid-template-columns:1fr auto;gap:35px;align-items:center}
    .info-band h2{font-size:30px}
    .info-band p{color:#c7c0b6;margin:8px 0 0}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:10px;border:1px solid transparent;font-weight:800;transition:.2s ease}
    .btn-primary{background:var(--orange);color:#fff}
    .btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}
    .btn-light{background:#fff;color:var(--ink)}
    .btn-light:hover{background:var(--mint);color:var(--ink);transform:translateY(-2px)}
    .faq-section{background:var(--paper-2)}
    .faq-list{max-width:880px;margin:auto;border-top:1px solid var(--line)}
    .faq-list details{border-bottom:1px solid var(--line);padding:20px 4px}
    .faq-list summary{font-weight:800;font-size:17px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px}
    .faq-list summary:after{content:"+";color:var(--orange);font-size:24px;line-height:1}
    .faq-list details[open] summary:after{content:"−"}
    .faq-list details p{color:var(--muted);max-width:760px;margin:13px 0 0}
    .site-footer{background:var(--ink);color:#fff;padding:52px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px;padding-bottom:42px}
    .footer-brand{font-size:19px;font-weight:800}
    .footer-copy{color:#aaa39a;max-width:390px;margin:12px 0 0}
    .footer-title{font-weight:800;margin-bottom:14px}
    .footer-links{display:flex;flex-direction:column;gap:8px;color:#aaa39a}
    .footer-links a{transition:.2s}
    .footer-links a:hover{color:var(--mint);padding-left:4px}
    .copyright{border-top:1px solid #3d3935;padding-top:20px;color:#89827a;display:flex;justify-content:space-between;gap:20px;font-size:12px}
    :focus-visible{outline:3px solid var(--yellow);outline-offset:3px}
    @media(max-width:1024px){
        .page-hero-grid{gap:35px}
        .feature-grid{grid-template-columns:1fr}
        .news-aside{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
        .news-aside h3{grid-column:1/-1;margin-bottom:0}
    }
    @media(max-width:768px){
        .container{width:min(var(--container),calc(100% - 32px))}
        .nav-wrap{height:68px}
        .brand-text{font-size:14px}
        .brand-mark{width:34px;height:34px;font-size:18px}
        .menu-toggle{display:block}
        .nav-links{display:none;position:absolute;left:16px;right:16px;top:68px;background:var(--ink);padding:10px;border-top:1px solid #3f3b37;flex-direction:column;align-items:stretch}
        .nav-links.open{display:flex}
        .nav-links a{padding:12px 14px}
        .nav-links .nav-app{margin-left:0;text-align:center}
        .page-hero{padding:52px 0 60px}
        .page-hero-grid{grid-template-columns:1fr}
        h1{font-size:43px}
        .section{padding:62px 0}
        .section-head{display:block}
        .section-intro{margin-top:13px}
        .news-aside{display:block}
        .news-aside h3{margin-bottom:18px}
        .news-item{grid-template-columns:1fr auto;gap:8px 14px;padding:19px 5px}
        .news-meta{grid-column:1/-1}
        .news-summary{font-size:13px}
        .info-band{grid-template-columns:1fr;padding:28px}
        .info-band .btn{width:100%}
        .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
        .footer-grid>div:first-child{grid-column:1/-1}
        .copyright{display:block}
        .copyright span{display:block;margin-top:5px}
    }
    @media(max-width:520px){
        h1{font-size:36px}
        .hero-copy{font-size:15px}
        .feature-card{min-height:360px;padding:25px}
        .feature-card h3{font-size:25px}
        .news-item:hover{padding-left:10px}
        .news-title{font-size:16px}
        .arrow-link{font-size:13px}
        .footer-grid{grid-template-columns:1fr}
        .footer-grid>div:first-child{grid-column:auto}
    }

/* roulang page: category2 */
:root{
            --ink:#171717;--ink-soft:#292725;--paper:#f7f4ee;--paper-2:#fffdf9;
            --line:#ded8ce;--muted:#746e65;--orange:#f05a3c;--orange-dark:#c9412b;
            --mint:#b9f2d3;--mint-dark:#2d8b69;--yellow:#ffd36c;--deep:#29262d;
            --radius:18px;--shadow:0 16px 40px rgba(31,25,20,.09);--container:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:15px}
        a{color:inherit;text-decoration:none}
        a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}
        img{max-width:100%;display:block}
        button,input{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--container),calc(100% - 48px));margin:auto}
        .site-header{background:var(--ink);color:#fff;position:relative;z-index:10}
        .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
        .brand{display:inline-flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
        .brand-mark{width:38px;height:38px;border-radius:11px;background:var(--orange);display:grid;place-items:center;color:#fff;font-size:20px;font-weight:900;transform:rotate(-5deg)}
        .brand-text{font-size:16px}.brand-text em{color:#ff967f;font-style:normal}
        .nav-links{display:flex;align-items:center;gap:5px}
        .nav-links a{padding:10px 15px;border-radius:9px;color:#d7d2ca;transition:.2s ease;position:relative}
        .nav-links a:hover,.nav-links a.active{color:#fff;background:#302e2b}
        .nav-links a.active:after{content:"";position:absolute;height:3px;left:15px;right:15px;bottom:2px;background:var(--orange);border-radius:4px}
        .nav-links .nav-app{background:var(--orange)!important;color:#fff!important;margin-left:8px;font-weight:700}
        .nav-links .nav-app:hover{background:var(--orange-dark)!important;transform:translateY(-2px)}
        .menu-toggle{display:none;background:none;border:1px solid #625d56;color:#fff;border-radius:8px;padding:8px 11px}
        .page-hero{background:var(--ink);color:#fff;padding:70px 0 82px;position:relative;overflow:hidden}
        .page-hero:after{content:"02";position:absolute;right:7%;bottom:-48px;font-size:210px;line-height:1;font-weight:900;color:rgba(255,255,255,.045);letter-spacing:-.1em}
        .hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end}
        .eyebrow,.section-kicker{font-size:12px;letter-spacing:.15em;text-transform:uppercase;font-weight:800}
        .eyebrow{color:var(--mint);margin-bottom:18px}
        h1,h2,h3,p{margin-top:0}
        h1{font-size:clamp(42px,6vw,72px);line-height:1.08;letter-spacing:-.055em;margin-bottom:22px}
        h2{font-size:clamp(28px,3.4vw,43px);line-height:1.2;letter-spacing:-.04em;margin-bottom:12px}
        h3{font-size:21px;line-height:1.35;margin-bottom:8px}
        .hero-desc{max-width:630px;color:#c8c1b7;font-size:17px;margin-bottom:0}
        .hero-note{border-left:3px solid var(--orange);padding:8px 0 8px 23px;color:#e4ddd4;max-width:330px}
        .hero-note strong{display:block;color:var(--yellow);font-size:30px;line-height:1.2;margin-bottom:5px}
        .section{padding:86px 0}.section-paper{background:var(--paper-2)}.section-dark{background:var(--deep);color:#fff}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:35px}
        .section-kicker{color:var(--orange-dark);margin-bottom:9px}.section-dark .section-kicker{color:var(--mint)}
        .section-intro{color:var(--muted);max-width:480px}.section-dark .section-intro{color:#b9b0a8}
        .event-track{position:relative;padding:15px 0 0}
        .event-track:before{content:"";position:absolute;left:28px;top:28px;bottom:36px;width:2px;background:var(--line)}
        .event-row{display:grid;grid-template-columns:80px 170px 1fr 140px;gap:24px;align-items:center;position:relative;padding:25px 0;border-bottom:1px solid var(--line)}
        .event-row:last-child{border-bottom:0}
        .event-number{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:var(--paper);border:8px solid var(--paper-2);box-shadow:0 0 0 1px var(--line);font-weight:900;color:var(--orange-dark);z-index:1}
        .event-date{font-weight:800;color:var(--muted);font-size:14px}
        .event-date b{display:block;color:var(--ink);font-size:17px}
        .event-summary p{color:var(--muted);margin:0;font-size:14px}
        .status{display:inline-flex;align-items:center;gap:7px;border-radius:7px;padding:5px 10px;font-size:12px;font-weight:800;white-space:nowrap}
        .status:before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
        .status-live{background:#e1f6e9;color:var(--mint-dark)}.status-next{background:#fff0c9;color:#98680d}.status-update{background:#ffe4dc;color:var(--orange-dark)}
        .arrow-link{font-weight:800;color:var(--orange-dark);white-space:nowrap;transition:.2s}.arrow-link:after{content:" →";transition:.2s}.arrow-link:hover{color:var(--orange);text-decoration:underline}.arrow-link:hover:after{padding-left:5px}
        .feature-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:20px}
        .feature-panel{background:var(--orange);color:#fff;border-radius:var(--radius);padding:35px;min-height:310px;position:relative;overflow:hidden}
        .feature-panel:after{content:"C7";position:absolute;right:-10px;bottom:-35px;font-size:180px;font-weight:900;color:rgba(255,255,255,.12);line-height:1}
        .feature-panel p{max-width:450px;color:#ffe9df}.feature-panel .section-kicker{color:#ffe1d5}
        .mini-panels{display:grid;gap:20px}.mini-panel{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s}.mini-panel:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
        .mini-panel p{color:var(--muted);font-size:14px;margin-bottom:0}
        .panel-label{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px;color:var(--muted);font-size:12px;font-weight:800;letter-spacing:.08em}
        .rule-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
        .rule-card{padding:25px;background:var(--paper);border-top:4px solid var(--orange);border-radius:12px;transition:.2s}
        .rule-card:hover{background:#fff8ef;transform:translateY(-3px)}.rule-card p{color:var(--muted);font-size:14px;margin-bottom:0}
        .faq-section{background:var(--paper-2)}.faq-list{max-width:850px;margin:auto;border-top:1px solid var(--line)}
        details{border-bottom:1px solid var(--line);padding:20px 0}summary{cursor:pointer;font-weight:800;list-style:none;display:flex;justify-content:space-between;gap:20px}summary::-webkit-details-marker{display:none}summary:after{content:"+";font-size:24px;color:var(--orange);line-height:1}details[open] summary:after{content:"−"}details p{color:var(--muted);margin:13px 32px 0 0}
        .cta{padding:72px 0}.cta-box{background:var(--mint);border-radius:var(--radius);padding:42px 48px;display:flex;align-items:center;justify-content:space-between;gap:25px}.cta-box p{color:#39735b;margin:7px 0 0}
        .btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:10px;border:1px solid transparent;font-weight:800;transition:.2s}.btn-primary{background:var(--orange);color:#fff}.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}.btn-light{background:#fff;color:var(--ink)}.btn-light:hover{background:var(--mint);color:var(--ink);transform:translateY(-2px)}.btn-outline{border-color:var(--line);background:transparent}.btn-outline:hover{border-color:var(--orange);color:var(--orange)}
        .site-footer{background:var(--ink);color:#fff;padding:52px 0 25px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px;padding-bottom:42px}.footer-brand{font-weight:800;font-size:18px}.footer-copy{color:#aaa39a;max-width:390px;margin-top:12px}.footer-title{font-weight:800;margin-bottom:13px}.footer-links{display:flex;flex-direction:column;gap:8px;color:#aaa39a}.footer-links a{transition:.2s}.footer-links a:hover{color:var(--orange)}.copyright{border-top:1px solid #3d3935;padding-top:20px;display:flex;justify-content:space-between;color:#8e8880;font-size:12px;gap:15px}
        @media(max-width:1024px){.hero-inner{gap:35px}.event-row{grid-template-columns:70px 145px 1fr 115px;gap:15px}}
        @media(max-width:768px){.container{width:min(var(--container),calc(100% - 32px))}.nav-wrap{height:68px}.brand-text{font-size:14px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;left:16px;right:16px;top:75px;padding:10px;background:var(--ink-soft);border:1px solid #49443e;border-radius:12px;flex-direction:column;align-items:stretch}.nav-links.is-open{display:flex}.nav-links a{padding:12px 14px}.nav-links a.active:after{left:14px;right:auto;width:35px}.nav-links .nav-app{margin-left:0;text-align:center}.hero-inner,.feature-grid{grid-template-columns:1fr}.page-hero{padding:55px 0 65px}.hero-note{margin-top:25px}.section{padding:64px 0}.section-head{display:block}.section-intro{margin-top:12px}.event-track:before{left:23px}.event-row{grid-template-columns:58px 1fr;gap:10px 18px;padding:23px 0}.event-number{width:48px;height:48px;border-width:6px}.event-date{grid-column:2}.event-summary{grid-column:2}.event-row .status{position:absolute;right:0;top:25px}.event-row .arrow-link{grid-column:2;margin-top:5px}.rule-grid{grid-template-columns:1fr}.cta-box{display:block;padding:32px 26px}.cta-box .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:5px}}
        @media(max-width:520px){h1{font-size:42px}.hero-desc{font-size:15px}.feature-panel{padding:27px;min-height:280px}.mini-panel{padding:23px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.brand{gap:8px}.brand-mark{width:34px;height:34px;font-size:18px}}

/* roulang page: category3 */
:root{
            --ink:#171717;
            --ink-soft:#292725;
            --paper:#f7f4ee;
            --paper-2:#fffdf9;
            --line:#ded8ce;
            --muted:#746e65;
            --orange:#f05a3c;
            --orange-dark:#c9412b;
            --mint:#b9f2d3;
            --mint-dark:#2d8b69;
            --yellow:#ffd36c;
            --deep:#29262d;
            --radius:18px;
            --shadow:0 16px 40px rgba(31,25,20,.09);
            --container:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:15px}
        a{color:inherit;text-decoration:none}
        a:hover{text-decoration:none}
        img{display:block;max-width:100%}
        button,input{font:inherit}
        button{cursor:pointer}
        h1,h2,h3,p{margin:0}
        h1,h2,h3{letter-spacing:-.045em}
        .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
        .site-header{background:var(--ink);color:#fff;position:relative;z-index:10}
        .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
        .brand{display:inline-flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
        .brand-mark{width:38px;height:38px;border-radius:11px;background:var(--orange);display:grid;place-items:center;color:#fff;font-size:20px;font-weight:900;transform:rotate(-5deg)}
        .brand-text{font-size:16px}
        .brand-text em{color:#ff967f;font-style:normal}
        .main-nav{display:flex;align-items:center;gap:5px}
        .main-nav a{padding:10px 15px;border-radius:9px;color:#d7d2ca;transition:.2s ease;position:relative}
        .main-nav a:hover,.main-nav a.active{color:#fff;background:#302e2b}
        .main-nav a.active:after{content:"";position:absolute;height:3px;left:15px;right:15px;bottom:2px;background:var(--orange);border-radius:4px}
        .nav-entry{background:var(--orange)!important;color:#fff!important;margin-left:8px;font-weight:700}
        .nav-entry:hover{background:var(--orange-dark)!important;transform:translateY(-2px)}
        .menu-toggle{display:none;background:none;border:1px solid #625d56;color:#fff;border-radius:8px;padding:8px 11px}
        .page-hero{background:var(--ink);color:#fff;padding:60px 0 72px;position:relative;overflow:hidden}
        .page-hero:after{content:"";position:absolute;width:370px;height:370px;border:1px solid rgba(255,255,255,.13);border-radius:50%;right:5%;top:-200px}
        .page-hero-grid{display:grid;grid-template-columns:1fr .8fr;align-items:end;gap:70px;position:relative;z-index:1}
        .eyebrow,.section-kicker{font-size:12px;letter-spacing:.15em;text-transform:uppercase;font-weight:800}
        .eyebrow{color:var(--mint);margin-bottom:17px}
        .page-hero h1{font-size:clamp(38px,5vw,66px);line-height:1.12;max-width:720px}
        .page-hero-copy{color:#c8c1b7;font-size:17px;max-width:630px;margin-top:22px}
        .hero-note{border-left:3px solid var(--orange);padding:6px 0 6px 20px;color:#dfd8cf;max-width:330px}
        .hero-note strong{display:block;color:var(--yellow);font-size:27px;line-height:1.2;margin-bottom:7px}
        .section{padding:88px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:35px}
        .section-kicker{color:var(--orange-dark);margin-bottom:9px}
        .section-head h2{font-size:clamp(28px,4vw,44px);line-height:1.2}
        .section-intro{color:var(--muted);max-width:450px}
        .download-showcase{background:var(--paper-2)}
        .download-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:center}
        .device-stage{min-height:430px;background:var(--deep);border-radius:24px;position:relative;overflow:hidden;padding:34px;display:flex;align-items:center;justify-content:center}
        .device-stage:before{content:"C7";position:absolute;right:-18px;top:-48px;color:rgba(255,255,255,.06);font-size:230px;font-weight:900;line-height:1}
        .device{width:214px;height:386px;border:8px solid #111;border-radius:31px;background:#f7f4ee;box-shadow:0 22px 36px rgba(0,0,0,.28);position:relative;z-index:1;padding:13px}
        .device-notch{width:70px;height:16px;background:#111;border-radius:0 0 12px 12px;margin:-13px auto 17px}
        .device-top{display:flex;justify-content:space-between;align-items:center;color:var(--ink);font-weight:900;font-size:12px}
        .device-logo{width:31px;height:31px;display:grid;place-items:center;background:var(--orange);color:#fff;border-radius:9px;font-weight:900}
        .device-banner{height:112px;background:var(--orange);border-radius:13px;margin-top:18px;padding:17px 13px;color:#fff}
        .device-banner small{display:block;color:#ffe1d8;font-size:10px;margin-bottom:5px}
        .device-banner strong{font-size:20px;line-height:1.15;display:block}
        .device-line{height:9px;border-radius:5px;background:#d9d2c8;margin-top:13px}
        .device-line.short{width:62%}
        .device-event{border:1px solid #ded8ce;border-radius:10px;margin-top:16px;padding:11px;font-size:10px;color:var(--muted)}
        .device-event b{display:block;color:var(--ink);font-size:12px;margin-bottom:4px}
        .download-copy h2{font-size:clamp(30px,4vw,46px);line-height:1.18;margin-bottom:18px}
        .download-copy>p{color:var(--muted);font-size:16px;max-width:570px}
        .download-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0}
        .btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:10px;border:1px solid transparent;font-weight:800;transition:.2s ease}
        .btn-primary{background:var(--orange);color:#fff}
        .btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 8px 20px rgba(201,65,43,.22)}
        .btn-dark{background:var(--ink);color:#fff}
        .btn-dark:hover{background:var(--orange-dark);transform:translateY(-2px)}
        .btn-outline{border-color:var(--line);background:transparent}
        .btn-outline:hover{border-color:var(--orange);color:var(--orange)}
        .version-line{display:flex;flex-wrap:wrap;gap:10px 22px;border-top:1px solid var(--line);padding-top:20px;color:var(--muted);font-size:13px}
        .version-line b{color:var(--ink)}
        .badge{display:inline-flex;align-items:center;padding:5px 10px;border-radius:7px;font-size:12px;font-weight:800}
        .badge-mint{background:var(--mint);color:var(--mint-dark)}
        .badge-orange{background:#ffe0d7;color:var(--orange-dark)}
        .feature-section{background:#eee9e1}
        .feature-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
        .feature-panel{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
        .feature-panel.accent{background:var(--orange);color:#fff;border-color:var(--orange)}
        .feature-panel h3{font-size:25px;margin:18px 0 9px}
        .feature-panel p{color:var(--muted)}
        .feature-panel.accent p{color:#ffe4db}
        .feature-number{font-size:12px;font-weight:900;letter-spacing:.12em;color:var(--orange-dark)}
        .feature-panel.accent .feature-number{color:#ffd6c9}
        .feature-list{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-top:25px}
        .feature-list div{border-top:1px solid var(--line);padding-top:13px}
        .feature-list strong{display:block;font-size:16px;margin-bottom:3px}
        .feature-list span{font-size:13px;color:var(--muted)}
        .feature-panel.accent .feature-list div{border-color:rgba(255,255,255,.28)}
        .feature-panel.accent .feature-list span{color:#ffe4db}
        .steps-section{background:var(--paper-2)}
        .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .step{padding:30px 28px 32px 0;border-right:1px solid var(--line);margin-right:28px}
        .step:last-child{border-right:0;margin-right:0}
        .step-no{width:39px;height:39px;border-radius:10px;background:var(--ink);color:var(--yellow);display:grid;place-items:center;font-weight:900;margin-bottom:22px}
        .step h3{font-size:21px;margin-bottom:8px}
        .step p{color:var(--muted);font-size:14px}
        .qr-section{background:var(--deep);color:#fff}
        .qr-grid{display:grid;grid-template-columns:1fr auto;gap:50px;align-items:center}
        .qr-section .section-kicker{color:var(--mint)}
        .qr-section h2{font-size:clamp(28px,4vw,42px);line-height:1.2;margin-bottom:13px}
        .qr-section p{color:#c9c1b7;max-width:620px}
        .qr-box{width:142px;height:142px;background:#fff;padding:12px;display:grid;grid-template-columns:repeat(7,1fr);gap:3px;border-radius:10px}
        .qr-box i{background:#29262d;display:block}
        .qr-box i:nth-child(3n),.qr-box i:nth-child(7n){background:transparent}
        .faq-section{background:var(--paper)}
        .faq-list{max-width:850px;margin: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;text-align:left;background:none;border:0;padding:22px 0;color:var(--ink);font-weight:800}
        .faq-question span:last-child{font-size:24px;color:var(--orange);transition:.2s}
        .faq-answer{display:none;color:var(--muted);padding:0 50px 22px 0;max-width:730px}
        .faq-item.open .faq-answer{display:block}
        .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
        .cta{padding:72px 0}
        .cta-box{background:var(--mint);border-radius:var(--radius);padding:42px 48px;display:flex;align-items:center;justify-content:space-between;gap:25px}
        .cta-box h2{font-size:32px;line-height:1.2}
        .cta-box p{color:#39735b;margin-top:7px}
        .site-footer{background:var(--ink);color:#fff;padding:52px 0 25px}
        .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px;padding-bottom:42px}
        .footer-brand{font-size:18px;font-weight:800;margin-bottom:12px}
        .footer-copy{color:#aaa39a;max-width:350px;font-size:14px}
        .footer-title{font-weight:800;margin-bottom:13px;color:#fff}
        .footer-links{display:flex;flex-direction:column;gap:7px;color:#aaa39a;font-size:14px}
        .footer-links a{transition:.2s}
        .footer-links a:hover{color:var(--mint);padding-left:4px}
        .copyright{border-top:1px solid #3e3a36;padding-top:20px;display:flex;justify-content:space-between;gap:20px;color:#837d75;font-size:12px}
        :focus-visible{outline:3px solid var(--yellow);outline-offset:3px}
        @media(max-width:1024px){
            .page-hero-grid,.download-grid{gap:40px}
            .main-nav a{padding-left:10px;padding-right:10px}
            .feature-grid{grid-template-columns:1fr}
        }
        @media(max-width:768px){
            .container{width:min(var(--container),calc(100% - 34px))}
            .nav-wrap{height:68px}
            .brand-text{font-size:14px}
            .brand-mark{width:34px;height:34px;font-size:18px}
            .menu-toggle{display:block}
            .main-nav{display:none;position:absolute;left:17px;right:17px;top:68px;background:var(--ink);padding:10px;border-top:1px solid #3f3a36;flex-direction:column;align-items:stretch;box-shadow:0 18px 30px rgba(0,0,0,.22)}
            .main-nav.open{display:flex}
            .main-nav a{padding:13px 14px}
            .main-nav a.active:after{left:14px;right:auto;width:28px;bottom:5px}
            .nav-entry{margin-left:0;margin-top:4px;text-align:center}
            .page-hero{padding:48px 0 58px}
            .page-hero-grid,.download-grid,.qr-grid{grid-template-columns:1fr}
            .hero-note{margin-top:14px}
            .section{padding:64px 0}
            .download-grid{gap:35px}
            .device-stage{min-height:400px}
            .steps{grid-template-columns:1fr}
            .step{border-right:0;border-bottom:1px solid var(--line);margin:0;padding:24px 0}
            .step:last-child{border-bottom:0}
            .qr-box{justify-self:start}
            .cta-box{padding:30px 25px;display:block}
            .cta-box .btn{margin-top:22px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
            .footer-grid>div:first-child{grid-column:1/-1}
            .copyright{display:block}
            .copyright span{display:block;margin-top:7px}
        }
        @media(max-width:520px){
            .page-hero h1{font-size:38px}
            .page-hero-copy{font-size:15px}
            .section-head{display:block}
            .section-intro{margin-top:12px}
            .device-stage{min-height:365px;padding:20px}
            .device{transform:scale(.9)}
            .feature-list{grid-template-columns:1fr}
            .download-actions{display:grid}
            .download-actions .btn{width:100%}
            .footer-grid{grid-template-columns:1fr}
            .footer-grid>div:first-child{grid-column:auto}
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}