/* roulang page: index */
:root{
            --ink:#20231f;
            --muted:#72766d;
            --paper:#f5f3ed;
            --panel:#fffdf8;
            --line:#deddd3;
            --orange:#ef6d3d;
            --orange-dark:#c94e28;
            --lime:#c9e86b;
            --purple:#7359a8;
            --shadow:0 16px 40px rgba(38,35,26,.09);
            --radius:18px;
            --container:1220px;
        }
        *{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:16px}
        a{color:inherit;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}
        .notice{background:var(--ink);color:#fff;padding:9px 0;font-size:13px}
        .notice-inner{display:flex;align-items:center;justify-content:center;gap:12px}
        .notice b{color:var(--lime);font-weight:700}
        .notice-close{background:none;border:0;color:#aaa;font-size:18px;line-height:1;padding:2px 8px}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(245,243,237,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
        .nav-wrap{height:76px;display:flex;align-items:center;gap:30px}
        .logo{display:flex;align-items:center;gap:11px;font-size:18px;font-weight:900;letter-spacing:-.4px;white-space:nowrap}
        .logo-mark{width:39px;height:39px;border:3px solid var(--ink);border-radius:12px;display:grid;place-items:center;position:relative;background:var(--lime)}
        .logo-mark:before{content:"";width:14px;height:7px;border:2px solid var(--ink);border-radius:8px;box-shadow:8px 0 0 -2px var(--lime)}
        .main-nav{display:flex;align-items:center;gap:22px;margin-left:auto}
        .main-nav a{font-size:14px;color:#5c6057;position:relative;padding:27px 0;white-space:nowrap}
        .main-nav a:after{content:"";position:absolute;left:0;right:100%;bottom:18px;height:3px;background:var(--orange);transition:.25s}
        .main-nav a:hover,.main-nav a.active{color:var(--ink);font-weight:700}
        .main-nav a:hover:after,.main-nav a.active:after{right:0}
        .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 19px;border-radius:11px;border:1px solid transparent;font-weight:700;transition:.25s}
        .nav-cta,.btn-primary{background:var(--orange);color:#fff}
        .nav-cta:hover,.btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 9px 18px rgba(239,109,61,.23)}
        .menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:44px;font-size:22px}
        .hero{padding:82px 0 76px;overflow:hidden}
        .hero-grid{display:grid;grid-template-columns:1fr 1.03fr;gap:74px;align-items:center}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--orange-dark);font-weight:800;font-size:13px;letter-spacing:1px;text-transform:uppercase}
        .eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;background:var(--orange);border-radius:4px}
        h1{font-size:clamp(38px,5vw,62px);line-height:1.15;letter-spacing:-2px;margin:20px 0 24px;max-width:690px}
        .hero-copy{font-size:18px;color:var(--muted);max-width:610px}
        .hero-actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}
        .btn-secondary{border-color:var(--ink);background:transparent}
        .btn-secondary:hover{background:var(--ink);color:#fff}
        .hero-note{display:flex;gap:20px;margin-top:28px;color:var(--muted);font-size:13px}
        .hero-note span{display:flex;align-items:center;gap:7px}
        .dot{width:8px;height:8px;border-radius:50%;background:var(--lime);border:1px solid #92ad2c}
        .console{background:#292b27;border-radius:26px;padding:14px;box-shadow:var(--shadow);transform:rotate(1.2deg)}
        .console-top{height:38px;display:flex;align-items:center;gap:7px;padding:0 10px;color:#c7c9bf;font-size:12px}
        .window-dot{width:9px;height:9px;border-radius:50%;background:#eb7350}
        .window-dot:nth-child(2){background:#d3dc79}.window-dot:nth-child(3){background:#8e7bb9}
        .console-label{margin-left:auto;border:1px solid #585c52;border-radius:20px;padding:3px 10px}
        .screen{background:#e9e6da;border-radius:17px;padding:22px;min-height:325px;position:relative;overflow:hidden}
        .screen:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(32,35,31,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(32,35,31,.045) 1px,transparent 1px);background-size:28px 28px}
        .screen-content{position:relative;z-index:1}
        .screen-head{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #c9c8bd;padding-bottom:15px}
        .screen-head strong{font-size:18px}.status{color:#59721c;background:#d9ef89;border-radius:20px;padding:5px 10px;font-size:12px;font-weight:700}
        .game-stage{height:170px;margin:20px 0;display:grid;grid-template-columns:1.5fr 1fr;gap:15px}
        .stage-main,.stage-side{background:#fffdf8;border:1px solid #d6d4c8;border-radius:14px;padding:15px}
        .stage-main{display:flex;align-items:center;justify-content:center;position:relative}
        .orbit{width:130px;height:130px;border:11px dotted var(--purple);border-radius:50%;display:grid;place-items:center;color:var(--purple);font-weight:900;font-size:24px}
        .stage-side{display:flex;flex-direction:column;gap:10px}
        .mini-line{height:12px;border-radius:5px;background:#e4e2d8}.mini-line.short{width:63%;background:#e7a288}
        .screen-foot{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:#77796f}
        .control-row{display:flex;gap:8px}.control{width:34px;height:28px;border-radius:7px;background:#464a42}
        .section{padding:88px 0}.section-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:30px;gap:25px}
        h2{font-size:clamp(28px,3vw,40px);line-height:1.25;letter-spacing:-1px;margin-top:12px}
        .section-intro{max-width:480px;color:var(--muted)}
        .feature-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:15px}
        .feature{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:27px;min-height:205px;transition:.25s;position:relative}
        .feature:first-child{background:var(--ink);color:#fff}
        .feature:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--orange)}
        .feature-num{font-size:13px;color:var(--orange);font-weight:900;letter-spacing:1px}
        .feature h3{font-size:22px;margin:30px 0 9px}.feature p{color:var(--muted);font-size:14px}.feature:first-child p{color:#c2c5bb}
        .feature-link{position:absolute;bottom:25px;right:26px;color:var(--orange);font-size:20px}
        .experience{background:#dbdfc6;padding:88px 0}
        .experience-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:52px;align-items:center}
        .experience-copy p{color:#60655a;margin:18px 0 25px}
        .check-list{display:grid;gap:13px}.check-list li{list-style:none;display:flex;gap:10px;align-items:start;font-size:14px}.check-list li:before{content:"✓";color:var(--orange-dark);font-weight:900}
        .workspace{background:#fffdf8;border:1px solid #cbcdb9;border-radius:20px;padding:24px;box-shadow:0 12px 28px rgba(41,44,31,.08)}
        .workspace-bar{display:flex;justify-content:space-between;align-items:center;padding-bottom:18px;border-bottom:1px solid var(--line)}
        .workspace-bar strong{font-size:19px}.workspace-bar small{color:var(--muted)}
        .tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:20px 0}
        .tool{padding:19px 14px;border:1px solid var(--line);border-radius:13px;background:#f7f5ed}.tool b{display:block;font-size:14px;margin-bottom:5px}.tool span{font-size:12px;color:var(--muted)}
        .workspace-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px}.ready{font-size:13px;color:#607728}.ready i{display:inline-block;width:8px;height:8px;background:var(--lime);border-radius:50%;margin-right:7px}
        .path{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:30px;border-top:1px solid var(--line)}
        .path-item{padding:25px 24px 10px 0;position:relative}.path-item:not(:last-child):after{content:"→";position:absolute;right:18px;top:29px;color:var(--orange);font-size:22px}.path-item b{display:block;font-size:17px;margin:9px 0}.path-item p{font-size:13px;color:var(--muted)}
        .updates{background:var(--panel);border:1px solid var(--line);border-radius:20px;overflow:hidden}
        .update-row{display:grid;grid-template-columns:105px 115px 1fr 35px;align-items:center;gap:18px;padding:20px 25px;border-bottom:1px solid var(--line);transition:.2s}.update-row:last-child{border-bottom:0}.update-row:hover{background:#f4f0e6}.update-date{font-size:13px;color:var(--muted)}.tag{display:inline-flex;width:max-content;padding:4px 9px;border-radius:20px;background:#f2d5c9;color:#984326;font-size:12px;font-weight:700}.update-title{font-weight:750;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.update-summary{font-size:13px;color:var(--muted);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.arrow{font-size:21px;color:var(--orange)}
        .download{display:grid;grid-template-columns:1fr 330px;gap:60px;align-items:center;background:var(--purple);color:#fff;border-radius:24px;padding:55px 65px;overflow:hidden;position:relative}.download:after{content:"";position:absolute;width:260px;height:260px;border:1px solid rgba(255,255,255,.18);border-radius:50%;right:90px;top:-100px}.download p{color:#ddd7ea;margin:16px 0 25px;max-width:630px}.download .section-kicker{color:var(--lime)}.download .section-kicker:before{background:var(--lime)}
        .device{border:7px solid #20231f;background:#f6f2e8;border-radius:31px;padding:14px;width:190px;height:285px;margin:auto;position:relative;z-index:1;box-shadow:12px 15px 0 rgba(32,35,31,.18)}.device-notch{height:10px;width:64px;background:#20231f;border-radius:10px;margin:0 auto 18px}.device-screen{height:185px;border-radius:15px;background:#d9ef89;padding:14px;color:#20231f}.device-screen strong{font-size:13px}.device-screen .line{height:8px;background:#839a3b;margin-top:13px;border-radius:5px}.qr{width:72px;height:72px;border:5px solid #20231f;background:repeating-linear-gradient(45deg,#fff 0 4px,#20231f 4px 7px);margin:16px auto 0}
        .faq-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:70px}.faq-lead p{color:var(--muted);margin:17px 0}.faq-item{border-top: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:20px 0;font-weight:750;color:var(--ink);min-height:60px}.faq-question span{font-size:24px;color:var(--orange);transition:.2s}.faq-answer{max-height:0;overflow:hidden;color:var(--muted);font-size:14px;transition:max-height .3s ease}.faq-item.open .faq-answer{max-height:150px;padding:0 35px 20px 0}.faq-item.open .faq-question span{transform:rotate(45deg)}
        .cta{padding:72px 0}.cta-box{background:var(--ink);color:#fff;border-radius:20px;padding:43px 50px;display:flex;justify-content:space-between;align-items:center;gap:30px}.cta-box p{color:#bfc3b8;margin-top:8px}.cta-box h2{font-size:30px}
        footer{background:#20231f;color:#fff;padding:58px 0 22px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:42px}.footer-brand p{color:#aeb2a8;font-size:13px;max-width:300px;margin-top:15px}.footer-title{font-size:14px;color:var(--lime);font-weight:800;margin-bottom:15px}.footer-links{display:grid;gap:9px;color:#b9bdb4;font-size:13px}.footer-links a:hover{color:#fff}.footer-bottom{border-top:1px solid #41443e;padding-top:20px;display:flex;justify-content:space-between;color:#858a81;font-size:12px;gap:20px}
        :focus-visible{outline:3px solid var(--lime);outline-offset:3px}
        @media(max-width:1050px){.main-nav{gap:13px}.main-nav a{font-size:13px}.hero-grid{gap:35px}.download{padding:45px 35px}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}}
        @media(max-width:800px){.container{width:min(var(--container),calc(100% - 34px))}.nav-wrap{height:68px}.menu-toggle{display:block;margin-left:auto}.main-nav{display:none;position:absolute;left:0;right:0;top:68px;background:var(--paper);border-bottom:1px solid var(--line);padding:15px 20px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}.main-nav.show{display:flex}.main-nav a{padding:13px 0;border-bottom:1px solid var(--line)}.main-nav a:after{bottom:0}.nav-cta{display:none}.hero{padding:60px 0}.hero-grid,.experience-grid,.faq-grid,.download{grid-template-columns:1fr}.console{max-width:620px;margin:0 auto}.feature-grid{grid-template-columns:1fr 1fr}.feature:first-child{grid-column:span 2}.path{grid-template-columns:1fr 1fr}.download{gap:25px}.download .device{order:-1}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}}
        @media(max-width:520px){body{font-size:15px}.notice-inner{justify-content:space-between;font-size:12px}.logo{font-size:15px}.logo-mark{width:34px;height:34px}.hero{padding:45px 0 52px}h1{font-size:34px;letter-spacing:-1.2px}.hero-copy{font-size:16px}.hero-note{gap:10px;flex-wrap:wrap}.screen{padding:14px;min-height:280px}.game-stage{height:140px;grid-template-columns:1.2fr 1fr}.orbit{width:92px;height:92px;font-size:18px}.section,.experience{padding:58px 0}.section-head{display:block}.section-intro{margin-top:14px}.feature-grid{grid-template-columns:1fr}.feature:first-child{grid-column:auto}.path{grid-template-columns:1fr}.path-item{padding-right:0;border-bottom:1px solid var(--line)}.path-item:not(:last-child):after{content:"↓";right:10px;top:28px}.tool-grid{grid-template-columns:1fr 1fr}.workspace{padding:16px}.workspace-bottom{align-items:start;flex-direction:column}.update-row{grid-template-columns:80px 1fr 20px;gap:10px;padding:17px 14px}.update-row .tag{grid-column:2}.update-summary{display:none}.update-title{grid-column:2}.update-date{grid-row:1 / span 2}.download{padding:35px 24px}.download h2{font-size:28px}.cta-box{padding:32px 24px;display:block}.cta-box .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:span 2}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}}

/* roulang page: index */
:root{
            --plum:#4d275f;
            --plum-deep:#351741;
            --plum-soft:#eee6f2;
            --amber:#f2b84b;
            --coral:#ef765f;
            --mint:#8bc9ad;
            --ink:#252128;
            --muted:#766d78;
            --paper:#fbf8f3;
            --cream:#f3eee7;
            --line:#e5ddd5;
            --white:#fffdf9;
            --shadow:0 14px 38px rgba(57,38,54,.09);
            --shadow-sm:0 6px 18px rgba(57,38,54,.07);
            --radius:18px;
            --radius-sm:11px;
            --container:1200px;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{
            background:var(--paper);
            color:var(--ink);
            font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
            font-size:16px;
            line-height:1.75;
            -webkit-font-smoothing:antialiased;
        }
        a{color:inherit;text-decoration:none}
        img{max-width:100%;display:block}
        button,input{font:inherit}
        button{cursor:pointer}
        :focus-visible{outline:3px solid rgba(242,184,75,.8);outline-offset:3px}
        .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
        .topline{height:5px;background:var(--plum)}
        .site-header{
            background:rgba(251,248,243,.94);
            border-bottom:1px solid var(--line);
            position:sticky;top:0;z-index:20;
            backdrop-filter:blur(12px);
        }
        .nav-wrap{min-height:78px;display:flex;align-items:center;gap:28px}
        .brand{display:flex;align-items:center;gap:11px;min-width:265px}
        .brand-mark{
            width:38px;height:38px;border-radius:12px;background:var(--plum);
            color:#fff;display:grid;place-items:center;position:relative;
            box-shadow:4px 4px 0 var(--amber);
        }
        .brand-mark:before,.brand-mark:after{content:"";position:absolute;border-radius:50%;background:var(--amber)}
        .brand-mark:before{width:5px;height:5px;right:7px;top:9px}
        .brand-mark:after{width:5px;height:5px;right:13px;top:15px}
        .brand-mark span{font-size:19px;font-weight:900;line-height:1}
        .brand-text{font-weight:850;color:var(--plum);font-size:17px;line-height:1.25}
        .brand-text small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;font-weight:650;margin-top:3px}
        .nav-list{display:flex;align-items:center;gap:4px;flex:1}
        .nav-list a{
            padding:9px 12px;border-radius:9px;color:#5e5361;font-size:14px;
            transition:.2s ease;white-space:nowrap
        }
        .nav-list a:hover,.nav-list a.active{background:var(--plum-soft);color:var(--plum);font-weight:700}
        .nav-action{white-space:nowrap}
        .menu-toggle{display:none;background:none;border:0;color:var(--plum);font-size:25px}
        .btn{
            display:inline-flex;align-items:center;justify-content:center;gap:8px;
            min-height:44px;padding:0 18px;border-radius:11px;border:1px solid transparent;
            font-size:14px;font-weight:750;transition:transform .2s,box-shadow .2s,background .2s
        }
        .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
        .btn-primary{background:var(--plum);color:white}
        .btn-primary:hover{background:var(--plum-deep)}
        .btn-amber{background:var(--amber);color:var(--plum-deep)}
        .btn-outline{border-color:#cfc3d3;background:var(--white);color:var(--plum)}
        .btn-light{background:var(--white);color:var(--plum);border-color:var(--line)}
        .hero{padding:78px 0 45px;position:relative;overflow:hidden}
        .hero:after{
            content:"";position:absolute;right:-100px;top:20px;width:300px;height:300px;
            opacity:.35;background-image:radial-gradient(var(--amber) 1px,transparent 1px);
            background-size:13px 13px;pointer-events:none
        }
        .hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:75px;align-items:center}
        .eyebrow,.section-kicker{
            display:inline-flex;align-items:center;gap:8px;color:var(--coral);
            font-size:12px;font-weight:850;letter-spacing:.1em
        }
        .eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;background:var(--coral);border-radius:3px}
        h1{font-size:clamp(36px,4.3vw,56px);line-height:1.16;letter-spacing:-.045em;color:var(--plum-deep);margin:17px 0 22px;font-weight:900}
        .hero-copy p{font-size:18px;color:var(--muted);max-width:610px;line-height:1.85}
        .hero-actions{display:flex;gap:12px;margin-top:31px;flex-wrap:wrap}
        .hero-tags{display:flex;gap:9px;flex-wrap:wrap;margin-top:24px}
        .tag{
            display:inline-flex;align-items:center;min-height:28px;padding:2px 10px;
            border-radius:99px;background:var(--plum-soft);color:var(--plum);font-size:12px;font-weight:700
        }
        .tag.amber{background:#fff1d2;color:#886019}.tag.mint{background:#e2f3eb;color:#267357}.tag.coral{background:#ffebe5;color:#ae493a}
        .workbench{
            background:#2d1d34;border-radius:24px;padding:15px;box-shadow:0 25px 55px rgba(53,23,65,.2);
            transform:rotate(1.2deg)
        }
        .workbench-top{height:38px;display:flex;align-items:center;justify-content:space-between;padding:0 10px;color:#c7b9ca;font-size:12px}
        .lights{display:flex;gap:6px}.lights i{display:block;width:8px;height:8px;border-radius:50%;background:var(--coral)}.lights i:nth-child(2){background:var(--amber)}.lights i:nth-child(3){background:var(--mint)}
        .screen{background:#f4ead9;border-radius:15px;padding:22px;min-height:300px;position:relative;overflow:hidden}
        .screen:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,transparent 65%,rgba(242,184,75,.24) 65%);pointer-events:none}
        .screen-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;position:relative}
        .screen-title{color:var(--plum-deep);font-size:19px;font-weight:850}
        .live{font-size:11px;color:#317457;background:#ddf1e6;border-radius:99px;padding:4px 9px;font-weight:800}
        .game-card{background:var(--plum);border-radius:14px;padding:18px;color:white;display:flex;align-items:center;gap:16px;position:relative}
        .game-icon{width:65px;height:65px;border-radius:13px;background:var(--amber);color:var(--plum-deep);display:grid;place-items:center;font-size:28px;font-weight:900}
        .game-card strong{display:block;font-size:17px}.game-card small{color:#ddcadf;font-size:12px}
        .play-dot{margin-left:auto;width:39px;height:39px;border-radius:50%;background:#fff;color:var(--plum);display:grid;place-items:center;font-weight:900}
        .screen-controls{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:13px;position:relative}
        .control{background:#fffdf9;border:1px solid #e3d7c9;border-radius:10px;padding:10px 12px;color:var(--muted);font-size:12px}
        .control b{display:block;color:var(--ink);font-size:13px}
        .trust-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:15px 0;margin-top:35px}
        .trust-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
        .trust-item{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px}
        .trust-item b{color:var(--plum);font-size:15px}
        .mini-icon{width:29px;height:29px;border-radius:8px;background:var(--plum-soft);display:grid;place-items:center;color:var(--plum);font-weight:900}
        .section{padding:92px 0}
        .section.alt{background:var(--cream)}
        .section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:30px}
        h2{font-size:clamp(27px,3vw,36px);line-height:1.25;letter-spacing:-.035em;color:var(--plum-deep);margin-top:10px}
        .section-intro{max-width:560px;color:var(--muted);font-size:15px}
        .text-link{color:var(--plum);font-weight:800;font-size:14px;border-bottom:2px solid var(--amber);padding-bottom:3px}
        .function-panel{display:grid;grid-template-columns:1.15fr 1fr 1fr 1fr 1.15fr;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--white);box-shadow:var(--shadow-sm)}
        .function-item{padding:26px 22px;min-height:160px;border-right:1px solid var(--line);transition:.2s}
        .function-item:last-child{border-right:0}.function-item:hover{background:#f9f0e5}
        .function-item:nth-child(2){border-top:4px solid var(--coral)}.function-item:nth-child(3){border-top:4px solid var(--amber)}.function-item:nth-child(4){border-top:4px solid var(--mint)}
        .function-item:first-child,.function-item:last-child{background:var(--plum);color:white}.function-item:last-child{background:#6b3c79}
        .function-item:first-child h3,.function-item:last-child h3{color:white}
        .function-icon{font-size:24px;margin-bottom:15px}.function-item h3{font-size:18px;color:var(--plum-deep);margin-bottom:7px}.function-item p{font-size:13px;color:var(--muted);line-height:1.65}.function-item:first-child p,.function-item:last-child p{color:#e3d6e5}
        .preview-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:30px;align-items:stretch}
        .preview-visual{background:var(--plum);border-radius:20px;padding:22px;min-height:390px;position:relative;overflow:hidden}
        .preview-visual:after{content:"PG";position:absolute;right:-14px;bottom:-50px;color:rgba(255,255,255,.08);font-size:180px;font-weight:900}
        .preview-label{color:#f8d98b;font-size:12px;font-weight:800;letter-spacing:.08em}.preview-title{color:white;font-size:27px;font-weight:850;margin:28px 0 10px}.preview-desc{color:#d8c8dc;max-width:340px;font-size:14px}
        .preview-window{position:absolute;left:22px;right:22px;bottom:22px;height:125px;background:#f7efe2;border-radius:13px;padding:16px;color:var(--plum-deep)}
        .preview-window .bars{display:flex;gap:7px;margin-bottom:14px}.preview-window .bars i{width:32px;height:6px;background:var(--amber);border-radius:4px}.preview-window .bars i:nth-child(2){background:var(--coral);width:55px}.preview-window .bars i:nth-child(3){background:var(--mint);width:23px}
        .preview-window strong{font-size:14px}.preview-window p{font-size:12px;color:var(--muted);margin-top:6px}
        .preview-info{background:var(--white);border:1px solid var(--line);border-radius:20px;padding:30px}
        .preview-info h3{font-size:23px;color:var(--plum-deep);margin-bottom:16px}.preview-info>p{color:var(--muted);font-size:14px;margin-bottom:22px}
        .step-list{list-style:none;margin-bottom:24px}.step-list li{display:flex;gap:13px;margin:15px 0;color:var(--muted);font-size:14px}.step-num{flex:0 0 27px;height:27px;background:var(--amber);border-radius:50%;display:grid;place-items:center;color:var(--plum-deep);font-weight:900;font-size:12px}.step-list b{display:block;color:var(--ink)}
        .download{background:#e8f3eb;border:1px solid #c8e2d1;border-radius:23px;padding:42px;display:grid;grid-template-columns:250px 1fr;gap:55px;align-items:center;overflow:hidden}
        .device{height:285px;width:155px;margin:auto;background:var(--plum-deep);border:7px solid #241329;border-radius:27px;padding:10px;box-shadow:14px 18px 0 rgba(77,39,95,.12);transform:rotate(-5deg)}
        .device-screen{height:100%;border-radius:17px;background:#f5ead8;padding:15px 9px}.device-screen .device-logo{height:44px;background:var(--plum);border-radius:9px;color:white;display:grid;place-items:center;font-weight:850;font-size:12px}.device-line{height:10px;background:#d9c9ba;border-radius:4px;margin-top:13px}.device-line.short{width:60%}.device-box{height:72px;background:var(--amber);border-radius:9px;margin-top:15px}
        .download h2{margin-bottom:13px}.download p{color:var(--muted);max-width:650px;font-size:15px}.download-meta{display:flex;gap:9px;flex-wrap:wrap;margin:20px 0}.download-note{font-size:12px;color:#547064;margin-top:14px}
        .news-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px}
        .featured-news{background:var(--plum);color:white;border-radius:20px;padding:31px;min-height:290px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}.featured-news:after{content:"✦";position:absolute;right:30px;top:18px;color:var(--amber);font-size:70px;opacity:.8}.featured-news .tag{background:#684476;color:#f9dc91;position:relative;z-index:1}.featured-news h3{font-size:25px;line-height:1.4;max-width:440px;position:relative;z-index:1}.featured-news p{color:#ddcedf;font-size:14px;max-width:480px;position:relative;z-index:1}.news-meta{display:flex;gap:15px;color:#cbb8ce;font-size:12px}
        .news-list{border-top:1px solid var(--line)}.news-item{display:flex;justify-content:space-between;gap:18px;padding:18px 4px;border-bottom:1px solid var(--line);transition:.2s}.news-item:hover{padding-left:10px;background:#f7f0e9}.news-item h3{font-size:16px;color:var(--plum-deep);line-height:1.5}.news-item p{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:460px}.news-side{flex:0 0 92px;text-align:right;color:var(--muted);font-size:12px}.news-side .tag{font-size:10px;margin-bottom:5px}
        .process{display:grid;grid-template-columns:repeat(4,1fr);position:relative;gap:25px}.process:before{content:"";position:absolute;top:22px;left:8%;right:8%;height:1px;background:#d6c7d9}.process-item{position:relative;z-index:1}.process-number{width:45px;height:45px;border-radius:50%;display:grid;place-items:center;background:var(--paper);border:1px solid var(--plum);color:var(--plum);font-weight:900;margin-bottom:20px}.process-item:nth-child(2) .process-number{background:var(--amber);border-color:var(--amber)}.process-item h3{font-size:17px;color:var(--plum-deep);margin-bottom:7px}.process-item p{font-size:13px;color:var(--muted)}
        .faq-wrap{max-width:850px;margin:0 auto}.faq{border-top:1px solid var(--line)}.faq details{border-bottom:1px solid var(--line);padding:21px 4px}.faq summary{cursor:pointer;list-style:none;font-size:17px;font-weight:800;color:var(--plum-deep);display:flex;justify-content:space-between;gap:15px}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"＋";font-size:22px;color:var(--coral);font-weight:400}.faq details[open] summary:after{content:"－"}.faq details p{color:var(--muted);font-size:14px;padding:13px 34px 0 0;max-width:760px}
        .cta{background:var(--plum-deep);padding:57px 0;color:white}.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{color:white;margin:0 0 10px}.cta p{color:#dbcddd;font-size:15px}.cta-actions{display:flex;gap:11px;flex-shrink:0}
        footer{background:#24152c;color:#d9c9dc;padding:48px 0 20px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px;padding-bottom:40px}.footer-brand{color:white;font-size:18px;font-weight:850}.footer-brand p{font-size:13px;color:#aa98ad;line-height:1.7;font-weight:400;margin-top:14px;max-width:290px}.footer-col h3{color:#fff;font-size:14px;margin-bottom:13px}.footer-col a{display:block;color:#aa98ad;font-size:13px;margin:8px 0;transition:.2s}.footer-col a:hover{color:var(--amber)}.copyright{border-top:1px solid #49364e;padding-top:18px;color:#88778c;font-size:12px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
        @media(max-width:1024px){.nav-wrap{gap:14px}.brand{min-width:220px}.nav-list a{padding:8px 7px;font-size:13px}.hero-grid{gap:35px}.function-panel{grid-template-columns:repeat(3,1fr)}.function-item:nth-child(3){border-right:0}.function-item:nth-child(4){border-top:1px solid var(--line)}.function-item:last-child{border-top:1px solid var(--line)}}
        @media(max-width:768px){.container{width:min(100% - 34px,var(--container))}.site-header{position:relative}.nav-wrap{min-height:68px}.brand{min-width:0;flex:1}.brand-text{font-size:15px}.brand-text small{display:none}.nav-action{display:none}.menu-toggle{display:block}.nav-list{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 17px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav-list.open{display:flex}.nav-list a{padding:12px 14px}.hero{padding:55px 0 30px}.hero-grid{grid-template-columns:1fr}.hero-copy p{font-size:16px}.workbench{transform:none;max-width:600px}.section{padding:65px 0}.section-head{display:block}.section-head .text-link{display:inline-block;margin-top:18px}.function-panel{grid-template-columns:1fr 1fr}.function-item{border-right:0;border-bottom:1px solid var(--line)}.function-item:last-child{grid-column:span 2}.preview-grid,.news-layout{grid-template-columns:1fr}.download{grid-template-columns:180px 1fr;gap:30px;padding:30px}.process{grid-template-columns:1fr 1fr;gap:28px}.process:before{display:none}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}}
        @media(max-width:520px){h1{font-size:34px}.hero-actions,.cta-actions{flex-direction:column;align-items:stretch}.btn{width:100%}.trust-inner{display:grid;grid-template-columns:1fr 1fr;gap:13px}.function-panel{grid-template-columns:1fr}.function-item:last-child{grid-column:auto}.screen{padding:15px;min-height:275px}.game-card{padding:13px}.preview-info{padding:23px}.download{grid-template-columns:1fr;text-align:center}.device{height:245px;width:135px}.download-meta{justify-content:center}.download p{font-size:14px}.process{grid-template-columns:1fr}.news-item{display:block}.news-side{text-align:left;margin-top:9px}.featured-news{min-height:320px;padding:24px}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-grid .footer-intro{grid-column:span 2}.copyright{display:block}.copyright span{display:block;margin-top:7px}}

/* roulang page: article */
:root{
            --plum:#4d275f;
            --plum-deep:#351741;
            --plum-soft:#eee6f2;
            --amber:#f2b84b;
            --coral:#ef765f;
            --mint:#8bc9ad;
            --ink:#252128;
            --muted:#766d78;
            --paper:#fbf8f3;
            --cream:#f3eee7;
            --line:#e5ddd5;
            --white:#fffdf9;
            --shadow:0 14px 38px rgba(57,38,54,.09);
            --shadow-sm:0 6px 18px rgba(57,38,54,.07);
            --radius:18px;
            --radius-sm:11px;
            --container:1200px;
        }
        *,*::before,*::after{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
        a{color:inherit;text-decoration:none}
        a:focus-visible,button:focus-visible{outline:3px solid var(--amber);outline-offset:3px}
        img{display:block;max-width:100%;height:auto}
        button,input{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
        .site-header{position:sticky;top:0;z-index:30;background:rgba(251,248,243,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
        .nav-wrap{height:76px;display:flex;align-items:center;gap:28px}
        .logo{display:flex;align-items:center;gap:11px;font-size:18px;font-weight:900;letter-spacing:-.4px;white-space:nowrap}
        .logo-mark{width:39px;height:39px;border:3px solid var(--ink);border-radius:12px;display:grid;place-items:center;position:relative;background:var(--amber);flex:none}
        .logo-mark:before{content:"";width:14px;height:7px;border:2px solid var(--ink);border-radius:8px;box-shadow:8px 0 0 -2px var(--amber)}
        .main-nav{display:flex;align-items:center;gap:21px;margin-left:auto}
        .nav-list{display:flex;align-items:center;gap:21px}
        .nav-list a{font-size:14px;color:#655c65;position:relative;padding:27px 0;white-space:nowrap}
        .nav-list a:after{content:"";position:absolute;left:0;right:100%;bottom:18px;height:3px;background:var(--coral);transition:.25s}
        .nav-list a:hover,.nav-list a.active{color:var(--ink);font-weight:700}
        .nav-list a:hover:after,.nav-list a.active:after{right:0}
        .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 19px;border-radius:11px;border:1px solid transparent;font-weight:700;transition:.25s}
        .nav-cta,.btn-primary{background:var(--coral);color:#fff}
        .nav-cta:hover,.btn-primary:hover{background:#d95d48;color:#fff;transform:translateY(-2px);box-shadow:0 9px 18px rgba(239,118,95,.24)}
        .btn-secondary{border-color:var(--ink);background:transparent}
        .btn-secondary:hover{background:var(--ink);color:#fff}
        .menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:44px;font-size:22px}
        .article-hero{padding:70px 0 58px;background:var(--cream);border-bottom:1px solid var(--line)}
        .breadcrumb{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:13px;margin-bottom:25px}
        .breadcrumb a{color:var(--plum)}
        .breadcrumb .slash{color:#b2a8ad}
        .article-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:55px;align-items:end}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:#b54b32;font-weight:800;font-size:13px;letter-spacing:1px}
        .eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;background:var(--coral);border-radius:4px}
        h1,h2,h3{line-height:1.25;letter-spacing:-.035em}
        h1{font-size:clamp(32px,4.5vw,52px);margin:17px 0 20px;max-width:850px}
        h2{font-size:30px;margin:0 0 16px}
        .article-summary{max-width:780px;color:var(--muted);font-size:18px;margin:0}
        .article-meta{border-left:3px solid var(--amber);padding:9px 0 9px 20px;color:var(--muted);font-size:14px}
        .article-meta strong{display:block;color:var(--ink);font-size:16px;margin-bottom:5px}
        .article-layout{display:grid;grid-template-columns:minmax(0,820px) 270px;gap:64px;align-items:start;padding:70px 0 88px}
        .article-content{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(26px,5vw,58px);box-shadow:var(--shadow-sm);min-width:0}
        .article-content h2{color:var(--plum);margin-top:38px}
        .article-content h3{font-size:21px;margin-top:30px;color:var(--ink)}
        .article-content p{margin:0 0 20px;color:#403941}
        .article-content ul,.article-content ol{padding-left:25px;margin:18px 0 25px;color:#403941}
        .article-content li{padding:4px 0}
        .article-content blockquote{margin:26px 0;padding:18px 22px;border-left:4px solid var(--mint);background:#edf7f1;color:#4d6258;border-radius:0 var(--radius-sm) var(--radius-sm) 0}
        .article-content img{border-radius:var(--radius-sm);margin:25px auto}
        .article-content table{width:100%;border-collapse:collapse;margin:25px 0;font-size:14px}
        .article-content th,.article-content td{border:1px solid var(--line);padding:11px 14px;text-align:left}
        .article-content th{background:var(--plum-soft);color:var(--plum)}
        .article-content .notice{padding:17px 20px;background:#fff6d9;border:1px solid #efd78f;border-radius:var(--radius-sm);margin:24px 0}
        .article-side{position:sticky;top:102px;display:grid;gap:16px}
        .side-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:23px;box-shadow:var(--shadow-sm)}
        .side-card.dark{background:var(--plum-deep);color:#fff}
        .side-card h3{font-size:19px;margin:0 0 13px}
        .side-card p{font-size:14px;color:var(--muted);margin:0 0 17px}
        .side-card.dark p{color:#d8c9dc}
        .side-list{list-style:none;padding:0;margin:0;display:grid;gap:11px}
        .side-list li{font-size:14px;border-bottom:1px solid var(--line);padding-bottom:10px}
        .side-list li:last-child{border-bottom:0;padding-bottom:0}
        .side-list a:hover{color:var(--coral)}
        .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:25px}
        .tag{display:inline-flex;width:max-content;padding:4px 10px;border-radius:20px;background:#f5ddd5;color:#984326;font-size:12px;font-weight:700}
        .article-bottom{display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:27px;margin-top:38px}
        .related{padding:72px 0;background:var(--cream);border-top:1px solid var(--line)}
        .related-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
        .related-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:27px;transition:.25s}
        .related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--coral)}
        .related-card h3{font-size:21px;margin:12px 0 9px}
        .related-card p{font-size:14px;color:var(--muted);margin:0}
        .related-meta{font-size:12px;color:#a06a59}
        .cta{padding:78px 0}
        .cta-box{background:var(--plum);color:#fff;border-radius:24px;padding:42px 50px;display:flex;align-items:center;justify-content:space-between;gap:30px;position:relative;overflow:hidden}
        .cta-box:after{content:"";position:absolute;right:-45px;top:-75px;width:210px;height:210px;border:25px solid rgba(242,184,75,.25);border-radius:50%}
        .cta-box h2{margin:0 0 9px;position:relative;z-index:1}
        .cta-box p{margin:0;color:#dacde0;position:relative;z-index:1}
        .cta-actions{display:flex;gap:11px;flex-wrap:wrap;position:relative;z-index:2}
        footer{background:var(--plum-deep);color:#fff;padding:55px 0 20px}
        .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.15fr;gap:35px}
        .footer-brand{font-size:20px;font-weight:900;margin-bottom:12px}
        .footer-intro p{max-width:320px;color:#cfbfd4;font-size:14px;margin:0}
        .footer-col{display:grid;align-content:start;gap:8px}
        .footer-col h3{font-size:15px;margin:0 0 8px;color:var(--amber)}
        .footer-col a{font-size:14px;color:#d6cbd8;transition:.2s}
        .footer-col a:hover{color:#fff;transform:translateX(3px)}
        .copyright{display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.16);margin-top:40px;padding-top:18px;color:#bbaabd;font-size:12px}
        @media(max-width:1050px){
            .main-nav{gap:15px}.nav-list{gap:14px}.nav-list a{font-size:13px}
            .article-layout{grid-template-columns:minmax(0,1fr) 230px;gap:32px}
        }
        @media(max-width:800px){
            .container{width:min(var(--container),calc(100% - 34px))}
            .nav-wrap{height:68px}.menu-toggle{display:block;margin-left:auto}
            .main-nav{display:none;position:absolute;left:0;right:0;top:68px;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 17px 18px}
            .main-nav.open{display:block}.nav-list{display:grid;gap:0}.nav-list a{padding:12px 2px}.nav-list a:after{bottom:7px}
            .nav-cta{display:none}.logo{font-size:16px}.logo-mark{width:36px;height:36px}
            .article-hero{padding:48px 0 42px}.article-hero-grid{grid-template-columns:1fr;gap:25px}
            .article-layout{grid-template-columns:1fr;padding:45px 0 60px}.article-side{position:static;grid-template-columns:1fr 1fr}
            .cta-box{padding:34px 28px;display:block}.cta-actions{margin-top:25px}
            .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
        }
        @media(max-width:520px){
            h1{font-size:32px}.article-summary{font-size:16px}.article-content{padding:24px 19px}
            .article-side,.related-grid{grid-template-columns:1fr}.article-bottom{display:grid}
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-intro{grid-column:1/-1}
            .copyright{display:grid;gap:5px}
        }

/* roulang page: category1 */
:root{
            --plum:#4d275f;
            --plum-deep:#351741;
            --plum-soft:#eee6f2;
            --amber:#f2b84b;
            --coral:#ef765f;
            --mint:#8bc9ad;
            --ink:#252128;
            --muted:#766d78;
            --paper:#fbf8f3;
            --cream:#f3eee7;
            --line:#e5ddd5;
            --white:#fffdf9;
            --orange:#ef6d3d;
            --orange-dark:#c94e28;
            --lime:#c9e86b;
            --shadow:0 14px 38px rgba(57,38,54,.09);
            --shadow-sm:0 6px 18px rgba(57,38,54,.07);
            --radius:18px;
            --radius-sm:11px;
            --container:1200px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.7}
        a{color:inherit;text-decoration:none}
        a:focus-visible,button:focus-visible{outline:3px solid var(--amber);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:0 auto}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(251,248,243,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
        .nav-wrap{height:76px;display:flex;align-items:center;gap:26px}
        .logo{display:flex;align-items:center;gap:11px;font-size:18px;font-weight:900;letter-spacing:-.4px;white-space:nowrap}
        .logo-mark{width:39px;height:39px;border:3px solid var(--ink);border-radius:12px;display:grid;place-items:center;position:relative;background:var(--lime)}
        .logo-mark:before{content:"";width:14px;height:7px;border:2px solid var(--ink);border-radius:8px;box-shadow:8px 0 0 -2px var(--lime)}
        .main-nav{display:flex;align-items:center;gap:20px;margin-left:auto}
        .main-nav a{font-size:14px;color:#5c5560;position:relative;padding:27px 0;white-space:nowrap}
        .main-nav a:after{content:"";position:absolute;left:0;right:100%;bottom:18px;height:3px;background:var(--orange);transition:.25s}
        .main-nav a:hover,.main-nav a.active{color:var(--ink);font-weight:700}
        .main-nav a:hover:after,.main-nav a.active:after{right:0}
        .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:11px;border:1px solid transparent;font-weight:700;transition:.25s}
        .nav-cta,.btn-primary{background:var(--orange);color:#fff}
        .nav-cta:hover,.btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 9px 18px rgba(239,109,61,.23);color:#fff}
        .btn-secondary{border-color:var(--ink);background:transparent}
        .btn-secondary:hover{background:var(--ink);color:#fff}
        .menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:44px;font-size:22px}
        h1,h2,h3,p{margin-top:0}
        h1{font-size:clamp(36px,5vw,58px);line-height:1.16;letter-spacing:-2px;margin:18px 0 20px;font-weight:900}
        h2{font-size:clamp(28px,3vw,38px);line-height:1.25;letter-spacing:-1px;margin-bottom:14px;font-weight:900}
        h3{font-size:21px;line-height:1.35;margin-bottom:10px}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--orange-dark);font-weight:800;font-size:13px;letter-spacing:1px}
        .eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;background:var(--orange);border-radius:4px}
        .hero{padding:70px 0 65px;background:linear-gradient(180deg,#fbf8f3 0%,#f4eee7 100%);border-bottom:1px solid var(--line)}
        .hero-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:62px;align-items:center}
        .hero-copy{font-size:18px;color:var(--muted);max-width:590px}
        .hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
        .hero-note{display:flex;gap:18px;flex-wrap:wrap;margin-top:25px;color:var(--muted);font-size:13px}
        .hero-note span{display:flex;align-items:center;gap:7px}
        .hero-note b{color:var(--orange-dark)}
        .experience-screen{background:var(--plum-deep);border-radius:24px;padding:18px;box-shadow:var(--shadow);transform:rotate(1deg)}
        .screen-top{height:38px;display:flex;align-items:center;justify-content:space-between;color:#e9dff0;font-size:13px;padding:0 9px}
        .screen-dots{display:flex;gap:6px}.screen-dots i{width:8px;height:8px;border-radius:50%;background:var(--coral)}.screen-dots i:nth-child(2){background:var(--amber)}.screen-dots i:nth-child(3){background:var(--mint)}
        .screen-body{display:grid;grid-template-columns:1.25fr .75fr;gap:13px;background:#f8f1e7;border-radius:15px;padding:15px;min-height:285px}
        .preview-board{border-radius:12px;background:#d7c6b0;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center}
        .preview-board:before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,rgba(77,39,95,.08) 0 1px,transparent 1px 28px),repeating-linear-gradient(0deg,rgba(77,39,95,.08) 0 1px,transparent 1px 28px)}
        .board-symbol{position:relative;width:116px;height:116px;border:8px solid var(--plum);border-radius:50%;display:grid;place-items:center;color:var(--plum);font-size:38px;font-weight:900;background:#f4c85f;box-shadow:10px 10px 0 rgba(77,39,95,.18)}
        .control-panel{background:#fffdf9;border:1px solid var(--line);border-radius:12px;padding:14px;display:flex;flex-direction:column;gap:11px}
        .status-line{font-size:12px;color:var(--muted);display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:10px}
        .status-line strong{color:#27845e}.setting-row{padding:11px 10px;background:var(--cream);border-radius:9px;font-size:13px;display:flex;justify-content:space-between}
        .mini-start{margin-top:auto;background:var(--orange);color:white;border:0;border-radius:9px;padding:10px;font-weight:700}
        .section{padding:82px 0}
        .section-alt{background:var(--cream)}
        .section-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:30px;gap:25px}
        .section-intro{max-width:500px;color:var(--muted)}
        .notice-bar{background:var(--ink);color:#fff;padding:17px 0}
        .notice-inner{display:flex;justify-content:space-between;gap:20px;align-items:center}
        .notice-list{display:flex;gap:28px;flex-wrap:wrap;font-size:14px}
        .notice-list span:before{content:"●";color:var(--lime);margin-right:8px;font-size:10px}
        .notice-inner a{color:var(--lime);font-weight:700;font-size:14px}
        .panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
        .experience-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}
        .launch-panel{padding:28px;min-height:310px;display:flex;flex-direction:column;justify-content:space-between}
        .launch-head{display:flex;justify-content:space-between;align-items:start;gap:20px}
        .badge{display:inline-flex;padding:5px 10px;border-radius:20px;background:var(--plum-soft);color:var(--plum);font-size:12px;font-weight:800}
        .badge.mint{background:#e1f2e9;color:#287453}.badge.amber{background:#fff0ce;color:#966510}
        .launch-visual{margin:22px 0;height:105px;border-radius:13px;background:#f1dfcc;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
        .launch-visual:after{content:"";position:absolute;width:230px;height:230px;border:1px dashed var(--orange);border-radius:50%}
        .launch-visual strong{z-index:1;color:var(--plum);font-size:22px}
        .side-info{padding:28px}.side-info ul{padding:0;margin:22px 0;display:grid;gap:14px}.side-info li{list-style:none;display:flex;gap:11px;font-size:14px}.side-info li:before{content:"✓";color:var(--orange-dark);font-weight:900}
        .step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
        .step{padding:26px 24px 10px 0;position:relative;margin-right:22px}.step:not(:last-child):after{content:"→";position:absolute;right:0;top:34px;color:var(--orange);font-size:24px}.step-no{font-size:13px;color:var(--orange-dark);font-weight:900}.step p{font-size:14px;color:var(--muted);margin-bottom:0}
        .device-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
        .device-card{padding:25px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);transition:.25s}.device-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--orange)}.device-icon{font-size:28px;margin-bottom:15px}.device-card p{font-size:14px;color:var(--muted);margin-bottom:0}
        .faq-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:70px}.faq-lead p{color:var(--muted);margin:17px 0}.faq-item{border-top: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:20px 0;font-weight:750;color:var(--ink);min-height:60px}.faq-question span{font-size:24px;color:var(--orange);transition:.25s}.faq-answer{display:none;color:var(--muted);font-size:14px;padding:0 35px 20px 0}.faq-item.open .faq-answer{display:block}.faq-item.open .faq-question span{transform:rotate(45deg)}
        .cta{padding:54px 0;background:var(--plum);color:#fff}.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta p{color:#dfd2e4;margin-bottom:0}.cta .btn-secondary{border-color:#fff;color:#fff}.cta .btn-secondary:hover{background:#fff;color:var(--plum)}
        footer{background:#241a28;color:#fff;padding:58px 0 22px}.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:35px}.footer-brand{font-size:22px;font-weight:900;margin-bottom:12px}.footer-intro p{color:#bdb3bf;max-width:330px;font-size:14px}.footer-col{display:flex;flex-direction:column;gap:8px}.footer-col h3{font-size:15px;color:var(--lime);margin-bottom:8px}.footer-col a{font-size:14px;color:#d4ccd6;transition:.2s}.footer-col a:hover{color:var(--amber);padding-left:3px}.copyright{border-top:1px solid #463747;margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#a99faa;font-size:12px}
        @media(max-width:1024px){.main-nav{gap:12px}.nav-wrap{gap:15px}.hero-grid{gap:35px}.step-grid{grid-template-columns:repeat(2,1fr)}.step{padding-bottom:25px}.step:nth-child(2):after{display:none}}
        @media(max-width:768px){.container{width:min(var(--container),calc(100% - 32px))}.nav-wrap{height:68px}.logo{font-size:16px}.menu-toggle{display:block;margin-left:auto}.main-nav{display:none;position:absolute;left:16px;right:16px;top:76px;background:var(--white);border:1px solid var(--line);border-radius:14px;padding:10px 18px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}.main-nav.show{display:flex}.main-nav a{padding:12px 0;border-bottom:1px solid var(--line)}.main-nav a:last-child{border-bottom:0}.main-nav a:after{bottom:0}.nav-cta{display:none}.hero{padding:55px 0}.hero-grid,.experience-layout,.faq-grid{grid-template-columns:1fr}.experience-screen{transform:none}.screen-body{min-height:250px}.section{padding:60px 0}.section-head{display:block}.section-intro{margin-top:10px}.notice-inner{display:block}.notice-inner a{display:inline-block;margin-top:12px}.device-grid{grid-template-columns:1fr}.cta-inner{display:block}.cta .hero-actions{margin-top:24px}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-bottom:7px}}
        @media(max-width:520px){h1{font-size:35px;letter-spacing:-1px}.hero-copy{font-size:16px}.hero-actions .btn{width:100%}.hero-note{display:grid;gap:8px}.screen-body{grid-template-columns:1fr}.control-panel{display:none}.preview-board{height:210px}.launch-panel,.side-info{padding:21px}.step-grid{grid-template-columns:1fr}.step{margin-right:0;border-bottom:1px solid var(--line)}.step:after{display:none!important}.footer-grid{grid-template-columns:1fr}.copyright{margin-top:30px}.faq-grid{gap:30px}}

/* roulang page: category2 */
:root{
            --plum:#4d275f;
            --plum-deep:#351741;
            --plum-soft:#eee6f2;
            --amber:#f2b84b;
            --coral:#ef765f;
            --mint:#8bc9ad;
            --ink:#252128;
            --muted:#766d78;
            --paper:#fbf8f3;
            --cream:#f3eee7;
            --line:#e5ddd5;
            --white:#fffdf9;
            --shadow:0 14px 38px rgba(57,38,54,.09);
            --shadow-sm:0 6px 18px rgba(57,38,54,.07);
            --radius:18px;
            --radius-sm:11px;
            --container:1200px;
            --orange:#ef6d3d;
            --orange-dark:#c94e28;
            --lime:#c9e86b;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(251,248,243,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
        .nav-wrap{height:76px;display:flex;align-items:center;gap:28px}
        .logo{display:flex;align-items:center;gap:11px;font-size:18px;font-weight:900;letter-spacing:-.4px;white-space:nowrap}
        .logo-mark{width:39px;height:39px;border:3px solid var(--ink);border-radius:12px;display:grid;place-items:center;position:relative;background:var(--lime)}
        .logo-mark:before{content:"";width:14px;height:7px;border:2px solid var(--ink);border-radius:8px;box-shadow:8px 0 0 -2px var(--lime)}
        .main-nav{display:flex;align-items:center;gap:21px;margin-left:auto}
        .nav-list{display:flex;align-items:center;gap:21px}
        .nav-list a{font-size:14px;color:#5c5360;position:relative;padding:27px 0;white-space:nowrap}
        .nav-list a:after{content:"";position:absolute;left:0;right:100%;bottom:18px;height:3px;background:var(--orange);transition:.25s}
        .nav-list a:hover,.nav-list a.active{color:var(--ink);font-weight:700}
        .nav-list a:hover:after,.nav-list a.active:after{right:0}
        .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 19px;border-radius:11px;border:1px solid transparent;font-weight:700;transition:.25s}
        .nav-cta,.btn-primary{background:var(--orange);color:#fff}
        .nav-cta:hover,.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 9px 18px rgba(239,109,61,.23)}
        .btn-secondary{border-color:var(--ink);background:transparent}
        .btn-secondary:hover{background:var(--ink);color:#fff}
        .menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:44px;font-size:22px}
        .page-hero{padding:80px 0 68px;background:var(--cream);border-bottom:1px solid var(--line)}
        .hero-layout{display:grid;grid-template-columns:1.06fr .94fr;gap:70px;align-items:center}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--orange-dark);font-size:13px;font-weight:800;letter-spacing:1px}
        .eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;background:var(--orange);border-radius:4px}
        h1,h2,h3,p{margin-top:0}
        h1{font-size:clamp(38px,5vw,58px);line-height:1.16;letter-spacing:-2px;margin:18px 0 20px;font-weight:900}
        h2{font-size:clamp(28px,3.2vw,38px);line-height:1.25;letter-spacing:-1px;margin:12px 0 14px}
        h3{font-size:20px;line-height:1.35}
        .hero-text{font-size:18px;color:var(--muted);max-width:620px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
        .tool-console{background:var(--plum-deep);color:#fff;border-radius:24px;padding:24px;box-shadow:var(--shadow);position:relative;overflow:hidden}
        .tool-console:after{content:"";position:absolute;inset:auto -30px -45px auto;width:170px;height:170px;border:28px solid rgba(201,232,107,.18);border-radius:50%}
        .console-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(255,255,255,.17);padding-bottom:18px}
        .console-title{font-weight:800}
        .status{font-size:12px;color:var(--lime);display:flex;align-items:center;gap:6px}
        .status:before{content:"";width:8px;height:8px;background:var(--lime);border-radius:50%}
        .console-screen{margin:22px 0;background:#21162b;border:1px solid rgba(255,255,255,.12);border-radius:15px;padding:20px;min-height:145px}
        .screen-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
        .screen-cell{border:1px solid rgba(255,255,255,.13);border-radius:9px;padding:12px;color:#d9cbe2;font-size:13px}
        .screen-cell b{display:block;color:#fff;font-size:16px;margin-top:4px}
        .console-controls{display:flex;gap:9px;flex-wrap:wrap}
        .console-controls span{padding:7px 11px;border-radius:8px;background:rgba(255,255,255,.12);font-size:12px}
        .section{padding:88px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
        .section-intro{max-width:520px;color:var(--muted)}
        .tool-board{display:grid;grid-template-columns:245px 1fr;gap:16px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow-sm)}
        .tool-menu{background:var(--plum);color:#fff;border-radius:14px;padding:15px}
        .tool-menu h3{font-size:17px;margin:7px 10px 18px}
        .tool-tab{display:flex;align-items:center;gap:10px;width:100%;border:0;background:transparent;color:#e8dff0;text-align:left;padding:13px 10px;border-radius:9px;margin:3px 0}
        .tool-tab.active,.tool-tab:hover{background:rgba(255,255,255,.16);color:#fff}
        .tool-tab strong{font-size:14px}
        .tool-detail{padding:24px 28px}
        .detail-label{color:var(--orange-dark);font-weight:800;font-size:13px}
        .detail-head{display:flex;justify-content:space-between;gap:20px;align-items:start;border-bottom:1px solid var(--line);padding-bottom:19px;margin-bottom:22px}
        .detail-head h3{font-size:26px;margin:6px 0}
        .badge{display:inline-flex;padding:5px 10px;border-radius:20px;background:var(--plum-soft);color:var(--plum);font-size:12px;font-weight:800;white-space:nowrap}
        .option-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
        .option{border:1px solid var(--line);border-radius:12px;padding:15px;background:#fff}
        .option b{display:block;margin-bottom:4px}
        .option span{font-size:13px;color:var(--muted)}
        .matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}
        .matrix-item{background:var(--white);border:1px solid var(--line);border-radius:15px;padding:22px;min-height:172px;transition:.25s}
        .matrix-item:hover{transform:translateY(-4px);border-color:var(--orange);box-shadow:var(--shadow-sm)}
        .matrix-icon{width:38px;height:38px;display:grid;place-items:center;border-radius:10px;background:var(--cream);color:var(--plum);font-weight:900;margin-bottom:19px}
        .matrix-item:nth-child(2) .matrix-icon{background:#fff0d0;color:#a56b00}
        .matrix-item:nth-child(3) .matrix-icon{background:#ffe2dc;color:#b84d3e}
        .matrix-item:nth-child(4) .matrix-icon{background:#dcf1e6;color:#36765a}
        .matrix-item h3{font-size:18px;margin-bottom:7px}
        .matrix-item p{color:var(--muted);font-size:13px;margin-bottom:12px}
        .mini-link{font-size:13px;color:var(--orange-dark);font-weight:800}
        .compare{background:var(--ink);color:#fff;border-radius:var(--radius);padding:34px 38px;display:grid;grid-template-columns:.8fr 1.2fr;gap:45px;align-items:center}
        .compare p{color:#c9c6c5}
        .compare-list{display:grid;gap:0}
        .compare-row{display:grid;grid-template-columns:1fr 1fr;padding:15px 0;border-bottom:1px solid rgba(255,255,255,.16);font-size:14px}
        .compare-row:last-child{border-bottom:0}
        .compare-row span:last-child{color:var(--lime);text-align:right}
        .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .step{padding:27px 28px 27px 0;position:relative}
        .step:not(:last-child){border-right:1px solid var(--line);padding-right:30px;margin-right:30px}
        .step-number{font-size:36px;font-weight:900;color:var(--amber);line-height:1}
        .step h3{margin:18px 0 7px;font-size:18px}
        .step p{color:var(--muted);font-size:14px;margin:0}
        .faq-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:70px}
        .faq-lead p{color:var(--muted);margin:17px 0}
        .faq-item{border-top: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:20px 0;font-weight:750;color:var(--ink);min-height:60px}
        .faq-question span{font-size:24px;color:var(--orange);transition:.25s}
        .faq-answer{display:none;color:var(--muted);font-size:14px;padding:0 35px 20px 0}
        .faq-item.open .faq-answer{display:block}
        .faq-item.open .faq-question span{transform:rotate(45deg)}
        .cta{background:var(--plum);color:#fff;border-radius:var(--radius);padding:42px 48px;display:flex;justify-content:space-between;align-items:center;gap:25px}
        .cta p{color:#ddd2e2;margin:8px 0 0}
        footer{background:var(--plum-deep);color:#fff;padding:58px 0 22px}
        .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:35px}
        .footer-brand{font-size:22px;font-weight:900;margin-bottom:10px}
        .footer-intro p{color:#cdbfd2;max-width:310px;font-size:14px}
        .footer-col{display:flex;flex-direction:column;gap:9px}
        .footer-col h3{font-size:15px;color:var(--lime);margin-bottom:8px}
        .footer-col a{font-size:14px;color:#d9cedc;transition:.2s}
        .footer-col a:hover{color:#fff;transform:translateX(3px)}
        .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.15);margin-top:42px;padding-top:18px;color:#a99aae;font-size:12px}
        :focus-visible{outline:3px solid var(--amber);outline-offset:3px}
        @media(max-width:1050px){
            .main-nav{gap:13px}.nav-list{gap:13px}.nav-list a{font-size:13px}
            .hero-layout{gap:35px}.matrix{grid-template-columns:repeat(2,1fr)}
        }
        @media(max-width:800px){
            .container{width:min(var(--container),calc(100% - 34px))}
            .nav-wrap{height:68px}.menu-toggle{display:block;margin-left:auto}
            .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 17px 18px;box-shadow:var(--shadow-sm)}
            .main-nav.show{display:block}.nav-list{display:flex;flex-direction:column;align-items:stretch;gap:0}
            .nav-list a{padding:12px 4px}.nav-list a:after{bottom:5px}
            .nav-cta{display:none}.hero-layout,.compare,.faq-grid{grid-template-columns:1fr}
            .page-hero{padding:58px 0}.section{padding:62px 0}
            .tool-board{grid-template-columns:1fr}.tool-menu{display:flex;flex-wrap:wrap;align-items:center;gap:4px}.tool-menu h3{width:100%;margin:7px 10px}
            .tool-tab{width:auto;flex:1 1 140px}.tool-detail{padding:22px 10px}
            .steps{grid-template-columns:1fr 1fr}.step:not(:last-child){border-right:0;margin-right:0;padding-right:20px}.step{border-bottom:1px solid var(--line)}
            .footer-grid{grid-template-columns:1fr 1fr}.cta{align-items:flex-start;flex-direction:column}
        }
        @media(max-width:520px){
            h1{font-size:35px;letter-spacing:-1px}.hero-text{font-size:16px}
            .hero-actions .btn{width:100%}.tool-console{padding:18px}.screen-grid,.option-list{grid-template-columns:1fr}
            .matrix{grid-template-columns:1fr}.section-head{display:block}.section-intro{margin-top:12px}
            .steps{grid-template-columns:1fr}.step:not(:last-child){border-bottom:1px solid var(--line)}
            .compare{padding:28px 22px}.cta{padding:30px 24px}.footer-grid{grid-template-columns:1fr}
            .copyright{display:block}.copyright span{display:block;margin-top:7px}
        }

/* roulang page: category3 */
:root{
            --plum:#4d275f;
            --plum-deep:#351741;
            --plum-soft:#eee6f2;
            --amber:#f2b84b;
            --coral:#ef765f;
            --mint:#8bc9ad;
            --ink:#252128;
            --muted:#766d78;
            --paper:#fbf8f3;
            --cream:#f3eee7;
            --line:#e5ddd5;
            --white:#fffdf9;
            --shadow:0 14px 38px rgba(57,38,54,.09);
            --shadow-sm:0 6px 18px rgba(57,38,54,.07);
            --radius:18px;
            --radius-sm:11px;
            --container:1200px;
        }
        *{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);font-size:16px;line-height:1.75}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%;height:auto}
        button,input{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(251,248,243,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
        .nav-wrap{height:76px;display:flex;align-items:center;gap:28px}
        .logo{display:flex;align-items:center;gap:11px;font-size:18px;font-weight:900;letter-spacing:-.4px;white-space:nowrap}
        .logo-mark{width:39px;height:39px;border:3px solid var(--ink);border-radius:12px;display:grid;place-items:center;position:relative;background:var(--amber);font-size:17px}
        .logo-mark:before{content:"";width:14px;height:7px;border:2px solid var(--ink);border-radius:8px;position:absolute}
        .logo-mark:after{content:"••";font-size:14px;letter-spacing:5px;position:absolute;top:7px;left:8px}
        .main-nav{display:flex;align-items:center;gap:21px;margin-left:auto}
        .nav-list{display:flex;align-items:center;gap:21px}
        .nav-list a{font-size:14px;color:#625b63;position:relative;padding:27px 0;white-space:nowrap}
        .nav-list a:after{content:"";position:absolute;left:0;right:100%;bottom:18px;height:3px;background:var(--coral);border-radius:4px;transition:.25s}
        .nav-list a:hover,.nav-list a.active{color:var(--ink);font-weight:700}
        .nav-list a:hover:after,.nav-list a.active:after{right:0}
        .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 19px;border-radius:11px;border:1px solid transparent;font-weight:700;transition:.25s}
        .nav-cta,.btn-primary{background:var(--plum);color:#fff}
        .nav-cta:hover,.btn-primary:hover{background:var(--plum-deep);transform:translateY(-2px);box-shadow:0 9px 18px rgba(77,39,95,.22)}
        .btn-secondary{border-color:var(--ink);background:transparent}
        .btn-secondary:hover{background:var(--ink);color:#fff}
        .menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:44px;font-size:22px}
        h1,h2,h3,p{margin-top:0}
        h1{font-size:clamp(36px,5vw,58px);line-height:1.16;letter-spacing:-2px;margin-bottom:21px}
        h2{font-size:clamp(28px,3vw,36px);line-height:1.25;letter-spacing:-1px;margin-bottom:12px}
        h3{font-size:20px;line-height:1.4;margin-bottom:9px}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--coral);font-weight:800;font-size:13px;letter-spacing:1px}
        .eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;background:var(--coral);border-radius:4px}
        .hero{padding:78px 0 70px;background:var(--cream);border-bottom:1px solid var(--line)}
        .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:68px;align-items:center}
        .hero-copy{font-size:18px;color:var(--muted);max-width:650px}
        .hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
        .hero-board{background:var(--plum-deep);color:#fff;border-radius:24px;padding:26px;box-shadow:var(--shadow);position:relative;overflow:hidden}
        .hero-board:after{content:"";position:absolute;right:-42px;bottom:-58px;width:190px;height:190px;border:28px solid rgba(242,184,75,.3);border-radius:50%}
        .board-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(255,255,255,.18);padding-bottom:18px}
        .board-top small{color:#d8cfe0}.live-dot{display:inline-flex;align-items:center;gap:7px;color:#bce8cd;font-size:13px}
        .live-dot:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--mint)}
        .board-feature{padding:38px 0 30px;position:relative;z-index:1}
        .board-feature strong{display:block;font-size:30px;line-height:1.25;margin-bottom:10px}
        .board-feature p{color:#d8cfe0;font-size:14px;margin-bottom:0}
        .board-tags{display:flex;gap:8px;flex-wrap:wrap;position:relative;z-index:1}
        .tag,.badge{display:inline-flex;width:max-content;padding:4px 10px;border-radius:20px;background:#f3ddd6;color:#963e29;font-size:12px;font-weight:700}
        .tag.plum{background:#eadcf0;color:var(--plum)}.tag.mint{background:#dcefe6;color:#377258}.tag.amber{background:#f8e8bd;color:#775211}
        .section{padding:84px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
        .section-intro{max-width:530px;color:var(--muted)}
        .topic-strip{display:grid;grid-template-columns:1.2fr .9fr .9fr .9fr;gap:12px}
        .topic-item{padding:23px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);transition:.25s}
        .topic-item:first-child{background:var(--ink);color:#fff}
        .topic-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--coral)}
        .topic-item p{font-size:14px;color:var(--muted);margin-bottom:0}.topic-item:first-child p{color:#c9c8c3}
        .topic-icon{font-size:24px;margin-bottom:17px}
        .news-layout{display:grid;grid-template-columns:1.06fr .94fr;gap:18px}
        .featured-news{background:var(--plum);color:#fff;border-radius:var(--radius);padding:34px;min-height:355px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
        .featured-news:after{content:"资讯";position:absolute;right:-10px;top:45px;font-size:90px;font-weight:900;color:rgba(255,255,255,.06);transform:rotate(-12deg)}
        .featured-news p{color:#ded4e5;max-width:510px}
        .featured-news .tag{background:var(--amber);color:#513a0d}
        .news-list{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:8px 24px}
        .news-row{display:grid;grid-template-columns:84px 1fr 24px;gap:15px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}
        .news-row:last-child{border-bottom:0}
        .news-row time{font-size:12px;color:var(--muted);line-height:1.4}
        .news-row strong{display:block;font-size:16px;margin-bottom:3px}.news-row span{font-size:13px;color:var(--muted)}
        .news-row:hover strong{color:var(--plum)}
        .arrow{color:var(--coral);font-size:21px}
        .filter-bar{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:20px}
        .filter-bar button{border:1px solid var(--line);background:var(--white);border-radius:30px;padding:9px 16px;color:var(--muted);transition:.2s}
        .filter-bar button:hover,.filter-bar button.active{background:var(--plum);border-color:var(--plum);color:#fff}
        .timeline{border-left:2px solid var(--plum-soft);margin:30px 0 0 13px;padding-left:28px}
        .timeline-item{position:relative;padding:0 0 28px}
        .timeline-item:before{content:"";position:absolute;left:-37px;top:8px;width:14px;height:14px;border:3px solid var(--paper);background:var(--coral);border-radius:50%;box-shadow:0 0 0 2px var(--coral)}
        .timeline-item time{font-size:12px;color:var(--coral);font-weight:800}
        .timeline-item p{color:var(--muted);font-size:14px;margin-bottom:0}
        .guide-panel{display:grid;grid-template-columns:.82fr 1.18fr;gap:38px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:34px}
        .guide-panel>div:first-child{background:var(--cream);border-radius:14px;padding:25px}
        .guide-list{display:grid;gap:14px}.guide-list li{list-style:none;display:flex;gap:12px;color:var(--muted);font-size:14px}
        .guide-list li:before{content:"✓";color:var(--coral);font-weight:900}
        .guide-panel p{color:var(--muted);font-size:14px}
        .faq-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:68px}
        .faq-lead p{color:var(--muted);margin:17px 0 24px}
        .faq-item{border-top: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:20px 0;font-weight:750;color:var(--ink);min-height:60px}
        .faq-question span{font-size:24px;color:var(--coral);transition:.2s}
        .faq-answer{display:none;color:var(--muted);font-size:14px;padding:0 36px 19px 0}
        .faq-item.open .faq-answer{display:block}.faq-item.open .faq-question span{transform:rotate(45deg)}
        .cta{padding:72px 0;background:var(--amber)}
        .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
        .cta p{max-width:620px;margin:0;color:#604b20}
        footer{background:var(--plum-deep);color:#fff;padding:55px 0 20px}
        .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.15fr;gap:34px}
        .footer-brand{font-size:21px;font-weight:900;margin-bottom:13px}.footer-intro p{color:#d5cbd9;max-width:330px;font-size:14px}
        .footer-col{display:flex;flex-direction:column;gap:8px}.footer-col h3{font-size:15px;color:var(--amber);margin-bottom:8px}.footer-col a{font-size:14px;color:#ddd3e0;transition:.2s}.footer-col a:hover{color:#fff;padding-left:3px}
        .copyright{border-top:1px solid rgba(255,255,255,.15);margin-top:38px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#bfb2c5;font-size:12px}
        @media(max-width:1024px){.main-nav{gap:14px}.nav-list{gap:13px}.hero-grid{gap:35px}.topic-strip{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:768px){
            .container{width:min(100% - 32px,var(--container))}.nav-wrap{height:68px}.menu-toggle{display:block;margin-left:auto}.main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 16px 18px;box-shadow:var(--shadow-sm)}
            .main-nav.open{display:block}.nav-list{display:flex;flex-direction:column;align-items:stretch;gap:0}.nav-list a{padding:12px 8px}.nav-list a:after{bottom:5px}.nav-cta{display:none}
            .hero{padding:55px 0}.hero-grid,.news-layout,.guide-panel,.faq-grid{grid-template-columns:1fr}.hero-board{margin-top:5px}.section{padding:62px 0}.section-head{display:block}.section-intro{margin-top:12px}.topic-strip{grid-template-columns:1fr 1fr}.cta-inner{display:block}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-bottom:5px}
        }
        @media(max-width:520px){
            h1{font-size:34px;letter-spacing:-1px}.logo{font-size:16px}.logo-mark{width:35px;height:35px}.topic-strip{grid-template-columns:1fr}.hero-actions .btn{width:100%}.featured-news{min-height:310px;padding:25px}.news-list{padding:4px 16px}.news-row{grid-template-columns:65px 1fr 18px;gap:10px}.guide-panel{padding:20px}.footer-grid{grid-template-columns:1fr}.copyright{margin-top:28px}
        }

/* roulang page: category4 */
:root{
            --plum:#4d275f;
            --plum-deep:#351741;
            --plum-soft:#eee6f2;
            --amber:#f2b84b;
            --coral:#ef765f;
            --mint:#8bc9ad;
            --ink:#252128;
            --muted:#766d78;
            --paper:#fbf8f3;
            --cream:#f3eee7;
            --line:#e5ddd5;
            --white:#fffdf9;
            --shadow:0 14px 38px rgba(57,38,54,.09);
            --shadow-sm:0 6px 18px rgba(57,38,54,.07);
            --radius:18px;
            --radius-sm:11px;
            --container:1200px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.7}
        a{color:inherit;text-decoration:none}
        a:focus-visible,button:focus-visible{outline:3px solid var(--amber);outline-offset:4px}
        img{display:block;max-width:100%}
        button,input{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(251,248,243,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
        .nav-wrap{height:76px;display:flex;align-items:center;gap:28px}
        .logo{display:flex;align-items:center;gap:11px;font-size:18px;font-weight:900;white-space:nowrap}
        .logo-mark{width:39px;height:39px;border:3px solid var(--ink);border-radius:12px;display:grid;place-items:center;background:var(--amber);position:relative}
        .logo-mark:before{content:"";width:16px;height:8px;border:2px solid var(--ink);border-radius:8px;box-shadow:9px 0 0 -2px var(--amber)}
        .nav-list{display:flex;align-items:center;gap:21px;margin-left:auto}
        .nav-list a{font-size:14px;color:#675e68;position:relative;padding:27px 0;white-space:nowrap}
        .nav-list a:after{content:"";position:absolute;left:0;right:100%;bottom:17px;height:3px;border-radius:3px;background:var(--coral);transition:.25s}
        .nav-list a:hover,.nav-list a.active{color:var(--ink);font-weight:800}
        .nav-list a:hover:after,.nav-list a.active:after{right:0}
        .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 19px;border:1px solid transparent;border-radius:11px;font-weight:800;transition:.25s}
        .nav-cta,.btn-primary{background:var(--coral);color:#fff}
        .nav-cta:hover,.btn-primary:hover{background:#d75e49;color:#fff;transform:translateY(-2px);box-shadow:0 9px 18px rgba(239,118,95,.24)}
        .btn-secondary{border-color:var(--ink);background:transparent}
        .btn-secondary:hover{background:var(--ink);color:#fff}
        .menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:var(--white);font-size:22px}
        .page-hero{padding:76px 0 66px;background:var(--cream);border-bottom:1px solid var(--line)}
        .breadcrumb{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:25px}
        .breadcrumb a:hover{color:var(--plum)}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:#b45236;font-size:13px;font-weight:900;letter-spacing:1px}
        .eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;border-radius:4px;background:var(--coral)}
        h1,h2,h3{line-height:1.25;letter-spacing:-.035em}
        h1{font-size:clamp(34px,5vw,56px);max-width:760px;margin:15px 0 18px}
        h2{font-size:clamp(27px,3vw,36px);margin:12px 0}
        h3{font-size:21px;margin:0 0 10px}
        .hero-text{max-width:720px;color:var(--muted);font-size:18px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
        .lesson-map{margin-top:38px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
        .map-step{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:18px;position:relative}
        .map-step strong{display:block;color:var(--plum);font-size:14px;margin-bottom:5px}
        .map-step span{font-size:13px;color:var(--muted)}
        .map-step b{position:absolute;right:16px;top:15px;color:var(--amber);font-size:20px}
        .section{padding:82px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:30px}
        .section-intro{max-width:490px;color:var(--muted);margin:0}
        .guide-layout{display:grid;grid-template-columns:280px 1fr;gap:28px;align-items:start}
        .guide-index{position:sticky;top:100px;background:var(--plum-deep);color:#fff;border-radius:var(--radius);padding:25px}
        .guide-index h3{font-size:19px;color:#fff;margin-bottom:17px}
        .guide-index a{display:flex;gap:10px;padding:10px 0;color:#d9cfe0;border-bottom:1px solid rgba(255,255,255,.14);font-size:14px}
        .guide-index a:hover{color:var(--amber)}
        .guide-index a:last-child{border-bottom:0}
        .guide-content{display:grid;gap:15px}
        .guide-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px 30px;box-shadow:var(--shadow-sm)}
        .guide-card.highlight{background:#fff5d9;border-color:#efd493}
        .guide-card.mint{background:#edf8f1;border-color:#c6e4d2}
        .step-line{display:grid;grid-template-columns:52px 1fr;gap:18px;padding:19px 0;border-bottom:1px solid var(--line)}
        .step-line:last-child{border-bottom:0;padding-bottom:0}
        .step-number{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:var(--plum);color:#fff;font-weight:900}
        .step-line p,.guide-card p{color:var(--muted);margin:0;font-size:15px}
        .tool-strip{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
        .tool-board{background:var(--ink);border-radius:var(--radius);padding:30px;color:#fff;min-height:290px}
        .tool-board h3{color:#fff}
        .tool-controls{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:23px}
        .control{border:1px solid rgba(255,255,255,.18);border-radius:11px;padding:13px;background:rgba(255,255,255,.06);font-size:13px;color:#e5dde9}
        .control em{display:block;color:var(--amber);font-style:normal;font-weight:800;margin-bottom:3px}
        .compatibility{background:var(--plum-soft);border-radius:var(--radius);padding:30px}
        .device-tags{display:flex;flex-wrap:wrap;gap:9px;margin:18px 0}
        .tag{display:inline-flex;padding:5px 10px;border-radius:20px;background:#f4d8cc;color:#984326;font-size:12px;font-weight:800}
        .tag.mint{background:#d7eee1;color:#28684d}
        .tag.amber{background:#f9e7b7;color:#7b5a14}
        .compatibility ul{padding:0;margin:0;display:grid;gap:10px;list-style:none;color:var(--muted);font-size:14px}
        .compatibility li:before{content:"✓";color:#36815d;font-weight:900;margin-right:9px}
        .notice{border-left:4px solid var(--coral);padding:13px 17px;background:#fff0ec;color:#68453d;border-radius:0 10px 10px 0;margin-top:18px;font-size:14px}
        .faq-list{max-width:860px;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;border:0;background:none;padding:20px 0;color:var(--ink);font-weight:800;min-height:62px}
        .faq-question span{font-size:24px;color:var(--coral);transition:.25s}
        .faq-answer{display:none;color:var(--muted);font-size:15px;padding:0 35px 20px 0}
        .faq-item.open .faq-answer{display:block}
        .faq-item.open .faq-question span{transform:rotate(45deg)}
        .cta{padding:42px 48px;background:var(--plum);border-radius:var(--radius);color:#fff;display:flex;justify-content:space-between;align-items:center;gap:25px}
        .cta h2{margin:0 0 9px;color:#fff}
        .cta p{margin:0;color:#d9cfe0}
        .cta .btn-secondary{border-color:#fff;color:#fff}
        .cta .btn-secondary:hover{background:#fff;color:var(--plum)}
        footer{margin-top:80px;background:var(--plum-deep);color:#fff;padding:54px 0 20px}
        .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px}
        .footer-brand{font-size:20px;font-weight:900;margin-bottom:12px}
        .footer-intro p{max-width:330px;color:#cfc3d5;font-size:14px;margin:0}
        .footer-col{display:flex;flex-direction:column;gap:8px}
        .footer-col h3{font-size:15px;color:var(--amber);margin-bottom:8px}
        .footer-col a{font-size:14px;color:#d7cdda;transition:.2s}
        .footer-col a:hover{color:#fff;transform:translateX(3px)}
        .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.15);margin-top:40px;padding-top:18px;color:#b9acbf;font-size:12px}
        @media(max-width:1024px){
            .nav-wrap{gap:16px}.nav-list{gap:13px}.nav-list a{font-size:13px}
            .guide-layout{grid-template-columns:230px 1fr}
        }
        @media(max-width:768px){
            .container{width:min(var(--container),calc(100% - 32px))}
            .nav-wrap{height:68px}.nav-list{display:none;position:absolute;left:16px;right:16px;top:76px;background:var(--white);border:1px solid var(--line);border-radius:14px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}
            .nav-list.show{display:flex}.nav-list a{padding:12px 14px}.nav-list a:after{display:none}.nav-list a.active{background:var(--plum-soft);border-radius:8px}
            .nav-cta{margin-left:auto;min-height:42px;padding:0 13px;font-size:13px}.menu-toggle{display:block}
            .page-hero{padding:50px 0}.hero-text{font-size:16px}.lesson-map{grid-template-columns:repeat(2,1fr)}
            .section{padding:58px 0}.section-head{display:block}.section-intro{margin-top:12px}
            .guide-layout,.tool-strip{grid-template-columns:1fr}.guide-index{position:static}.tool-board{min-height:auto}
            .cta{display:block;padding:30px 25px}.cta .btn{margin-top:22px}
            .footer-grid{grid-template-columns:repeat(2,1fr)}.footer-intro{grid-column:1/-1}
        }
        @media(max-width:480px){
            h1{font-size:34px}.lesson-map{grid-template-columns:1fr}.hero-actions .btn{width:100%}
            .guide-card{padding:22px 20px}.tool-controls{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin:5px 0}
        }

/* roulang page: category5 */
:root{
            --ink:#20231f;
            --muted:#72766d;
            --paper:#f5f3ed;
            --panel:#fffdf8;
            --line:#deddd3;
            --orange:#ef6d3d;
            --orange-dark:#c94e28;
            --lime:#c9e86b;
            --purple:#7359a8;
            --plum:#4d275f;
            --plum-deep:#351741;
            --plum-soft:#eee6f2;
            --amber:#f2b84b;
            --coral:#ef765f;
            --mint:#8bc9ad;
            --cream:#f3eee7;
            --white:#fffdf9;
            --shadow:0 16px 40px rgba(38,35,26,.09);
            --shadow-sm:0 6px 18px rgba(57,38,54,.07);
            --radius:18px;
            --radius-sm:11px;
            --container:1200px;
        }
        *{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:16px}
        a{color:inherit;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{position:sticky;top:0;z-index:30;background:rgba(245,243,237,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
        .nav-wrap{min-height:76px;display:flex;align-items:center;gap:22px}
        .logo{display:flex;align-items:center;gap:11px;font-size:18px;font-weight:900;letter-spacing:-.4px;white-space:nowrap}
        .logo-mark{width:39px;height:39px;border:3px solid var(--ink);border-radius:12px;display:grid;place-items:center;position:relative;background:var(--lime);flex:0 0 auto}
        .logo-mark:before{content:"";width:14px;height:7px;border:2px solid var(--ink);border-radius:8px;box-shadow:8px 0 0 -2px var(--lime)}
        .nav-list{display:flex;align-items:center;gap:20px;margin-left:auto}
        .nav-list a{font-size:14px;color:#5c6057;position:relative;padding:27px 0;white-space:nowrap}
        .nav-list a:after{content:"";position:absolute;left:0;right:100%;bottom:18px;height:3px;background:var(--orange);transition:.25s}
        .nav-list a:hover,.nav-list a.active{color:var(--ink);font-weight:700}
        .nav-list a:hover:after,.nav-list a.active:after{right:0}
        .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:11px;border:1px solid transparent;font-weight:800;transition:transform .25s,background .25s,border-color .25s,box-shadow .25s}
        .nav-cta,.btn-primary{background:var(--orange);color:#fff}
        .nav-cta:hover,.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 9px 18px rgba(239,109,61,.23)}
        .btn-secondary{border-color:var(--ink);background:transparent;color:var(--ink)}
        .btn-secondary:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
        .btn-light{background:var(--white);color:var(--plum);border-color:var(--white)}
        .btn-light:hover{background:var(--lime);border-color:var(--lime);color:var(--ink);transform:translateY(-2px)}
        a:focus-visible,button:focus-visible{outline:3px solid rgba(239,109,61,.42);outline-offset:3px}
        .menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:44px;font-size:21px;color:var(--ink)}
        .section{padding:88px 0}
        .section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--orange-dark);font-weight:800;font-size:13px;letter-spacing:1px}
        .section-kicker:before{content:"";width:24px;height:3px;background:var(--orange);border-radius:4px}
        h1,h2,h3,p{margin-top:0}
        h1{font-size:clamp(36px,4.7vw,57px);line-height:1.18;letter-spacing:-2px;margin:16px 0 21px}
        h2{font-size:clamp(27px,3vw,36px);line-height:1.3;letter-spacing:-1px;margin-bottom:13px}
        h3{font-size:19px;line-height:1.4}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:31px}
        .section-intro{max-width:535px;color:var(--muted);margin:0}
        .crumb{padding:22px 0 0;font-size:13px;color:var(--muted)}
        .crumb span{margin:0 8px;color:#aaa397}
        .download-hero{padding:46px 0 72px;overflow:hidden}
        .download-shell{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:55px;align-items:center;padding:58px;min-height:510px;background:var(--plum);border-radius:28px;overflow:hidden;color:#fff}
        .download-shell:before{content:"";position:absolute;width:450px;height:450px;border:58px solid rgba(201,232,107,.12);border-radius:50%;right:-130px;top:-180px}
        .download-shell:after{content:"";position:absolute;left:45%;bottom:-105px;width:240px;height:240px;background:rgba(242,184,75,.12);transform:rotate(27deg);border-radius:35px}
        .download-copy,.device-stage{position:relative;z-index:1}
        .download-copy .section-kicker{color:var(--lime)}
        .download-copy .section-kicker:before{background:var(--lime)}
        .download-copy p{max-width:565px;color:#ded5e3;font-size:17px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0 24px}
        .trust-line{display:flex;flex-wrap:wrap;gap:12px 22px;color:#e2d9e6;font-size:13px}
        .trust-line span{display:flex;align-items:center;gap:7px}
        .trust-line b{color:var(--lime);font-size:17px}
        .device-stage{height:395px;display:flex;justify-content:center;align-items:center}
        .phone{position:relative;width:220px;height:390px;padding:12px;background:#1e1920;border:5px solid #e8e0dc;border-radius:34px;box-shadow:18px 25px 0 rgba(0,0,0,.14),0 18px 42px rgba(0,0,0,.25)}
        .phone:before{content:"";position:absolute;width:82px;height:18px;border-radius:0 0 12px 12px;background:#1e1920;left:64px;top:-2px;z-index:2}
        .phone-screen{height:100%;border-radius:21px;background:#f7f0e8;padding:19px 14px;color:var(--ink);overflow:hidden}
        .screen-top{display:flex;justify-content:space-between;font-size:9px;font-weight:800;margin-bottom:21px}
        .app-title{font-size:15px;font-weight:900;color:var(--plum);margin-bottom:18px}
        .screen-banner{height:107px;border-radius:14px;background:var(--plum);padding:14px;color:#fff;position:relative;overflow:hidden}
        .screen-banner:after{content:"";position:absolute;width:95px;height:95px;border:16px solid var(--lime);border-radius:50%;right:-32px;bottom:-34px}
        .screen-banner small{color:var(--lime);font-weight:700}
        .screen-banner strong{display:block;font-size:17px;line-height:1.3;margin-top:8px;position:relative;z-index:1}
        .screen-row{display:flex;gap:9px;margin-top:15px}
        .screen-card{flex:1;background:#fff;border:1px solid #e5ddd5;border-radius:10px;padding:10px;font-size:9px;font-weight:800}
        .screen-icon{display:block;width:24px;height:24px;border-radius:8px;background:var(--amber);margin-bottom:8px}
        .screen-line{height:8px;margin-top:13px;border-radius:8px;background:#ded4df}
        .screen-line.short{width:65%}
        .device-note{position:absolute;right:-17px;bottom:12px;background:var(--lime);color:var(--ink);padding:10px 13px;border:2px solid var(--ink);border-radius:10px;font-size:12px;font-weight:900;transform:rotate(-4deg)}
        .notice-bar{padding:15px 18px;background:#fff5dc;border:1px solid #efdca6;border-radius:var(--radius-sm);display:flex;gap:12px;align-items:flex-start;color:#6e5624;font-size:14px}
        .notice-icon{width:27px;height:27px;flex:0 0 27px;border-radius:50%;display:grid;place-items:center;background:var(--amber);color:var(--ink);font-weight:900}
        .download-panel{display:grid;grid-template-columns:.85fr 1.15fr;gap:16px}
        .qr-card{background:var(--ink);border-radius:var(--radius);padding:28px;color:#fff;min-height:286px;display:flex;flex-direction:column;justify-content:space-between}
        .qr-card h3{font-size:21px;margin-bottom:5px}
        .qr-card p{font-size:14px;color:#c8ccc2;margin:0}
        .qr-layout{display:flex;align-items:center;gap:17px;margin-top:20px}
        .qr-code{width:112px;height:112px;background-color:#fffdf8;background-image:linear-gradient(90deg,transparent 46%,#222 46%,#222 57%,transparent 57%),linear-gradient(transparent 46%,#222 46%,#222 57%,transparent 57%);background-size:18px 18px;border:8px solid #fffdf8;box-shadow:inset 0 0 0 3px #222;position:relative}
        .qr-code:before,.qr-code:after{content:"";position:absolute;width:30px;height:30px;border:6px solid #222;background:#fffdf8}
        .qr-code:before{left:4px;top:4px}.qr-code:after{right:4px;bottom:4px}
        .qr-layout small{font-size:12px;color:#c8ccc2;line-height:1.7}
        .download-details{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:27px}
        .download-details h3{margin-bottom:15px}
        .detail-row{display:flex;justify-content:space-between;gap:18px;padding:13px 0;border-top:1px solid var(--line);font-size:14px}
        .detail-row:first-of-type{border-top:0}
        .detail-row span{color:var(--muted)}
        .detail-row strong{text-align:right;color:var(--ink)}
        .detail-row strong.status{color:#47765d}
        .setup-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:45px;align-items:start}
        .steps{position:relative;padding-left:1px}
        .step{display:grid;grid-template-columns:56px 1fr;gap:18px;padding:0 0 29px;position:relative}
        .step:not(:last-child):before{content:"";position:absolute;left:27px;top:53px;bottom:0;border-left:1px dashed #c9beb3}
        .step-number{width:55px;height:55px;border-radius:16px;background:var(--plum-soft);color:var(--plum);font-weight:900;font-size:19px;display:grid;place-items:center;border:1px solid #dbcfdf}
        .step:nth-child(2) .step-number{background:#fff1d4;color:#a46c12;border-color:#f0d49c}
        .step:nth-child(3) .step-number{background:#e3f2eb;color:#3d785e;border-color:#b8dcc9}
        .step h3{margin:4px 0 5px}
        .step p{color:var(--muted);font-size:14px;margin:0}
        .side-tips{background:var(--cream);border:1px solid var(--line);border-radius:var(--radius);padding:29px}
        .side-tips h3{margin-bottom:18px}
        .tip-item{display:flex;gap:12px;padding:14px 0;border-top:1px solid #ddd5cb}
        .tip-item:first-of-type{border-top:0;padding-top:0}
        .tip-dot{width:10px;height:10px;border-radius:50%;background:var(--orange);margin-top:8px;flex:0 0 auto}
        .tip-item:nth-of-type(3) .tip-dot{background:var(--mint)}
        .tip-item:nth-of-type(4) .tip-dot{background:var(--purple)}
        .tip-item b{display:block;font-size:15px;margin-bottom:2px}
        .tip-item p{font-size:13px;color:var(--muted);margin:0}
        .permissions{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm)}
        .permission-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:24px}
        .permission{border:1px solid var(--line);background:#fffaf3;border-radius:14px;padding:19px;transition:.25s}
        .permission:hover{border-color:var(--orange);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
        .permission-icon{width:38px;height:38px;border-radius:11px;background:var(--plum-soft);color:var(--plum);display:grid;place-items:center;font-weight:900;font-size:18px;margin-bottom:14px}
        .permission h3{font-size:16px;margin-bottom:6px}
        .permission p{font-size:13px;color:var(--muted);margin:0}
        .faq-wrap{display:grid;grid-template-columns:.68fr 1.32fr;gap:68px}
        .faq-lead p{color:var(--muted);margin:17px 0 24px}
        .faq-item{border-top:1px solid var(--line)}
        .faq-question{width:100%;display:flex;justify-content:space-between;gap:20px;align-items:center;text-align:left;background:none;border:0;padding:20px 0;font-weight:800;color:var(--ink);min-height:64px}
        .faq-question span{font-size:24px;color:var(--orange);font-weight:400;transition:.25s}
        .faq-answer{display:none;padding:0 35px 21px 0;color:var(--muted);font-size:14px}
        .faq-item.open .faq-answer{display:block}
        .faq-item.open .faq-question span{transform:rotate(45deg)}
        .cta-band{padding:54px;border-radius:var(--radius);background:var(--orange);display:flex;justify-content:space-between;align-items:center;gap:30px;color:#fff}
        .cta-band h2{margin:0 0 7px;font-size:31px}
        .cta-band p{margin:0;color:#fff1e9}
        footer{margin-top:88px;background:var(--ink);color:#fff;padding:64px 0 0}
        .footer-grid{display:grid;grid-template-columns:1.7fr repeat(3,1fr);gap:42px;padding-bottom:44px}
        .footer-brand{font-size:20px;font-weight:900;margin-bottom:12px}
        .footer-intro p{max-width:340px;color:#bdc1b7;font-size:14px;margin:0}
        .footer-col h3{font-size:15px;margin:2px 0 14px;color:var(--lime)}
        .footer-col a{display:block;color:#c8ccc2;font-size:14px;margin:9px 0;transition:.2s}
        .footer-col a:hover{color:#fff;transform:translateX(3px)}
        .copyright{border-top:1px solid #3d403a;min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px;color:#aeb3a8;font-size:13px}
        @media(max-width:1080px){
            .nav-list{gap:13px}.nav-list a{font-size:13px}
            .download-shell{gap:25px;padding:45px}
        }
        @media(max-width:900px){
            .nav-wrap{justify-content:space-between}.nav-cta{margin-left:auto}
            .menu-toggle{display:grid;place-items:center}
            .nav-list{display:none;position:absolute;top:76px;left:0;right:0;padding:12px 24px 20px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
            .nav-list.open{display:grid}
            .nav-list a{padding:11px 0;font-size:15px}.nav-list a:after{bottom:5px}
            .download-shell{grid-template-columns:1fr;padding:44px}
            .device-stage{height:340px;margin-top:0}
            .download-panel,.setup-grid,.faq-wrap{grid-template-columns:1fr}
            .permission-grid{grid-template-columns:repeat(3,1fr)}
            .faq-wrap{gap:25px}
        }
        @media(max-width:640px){
            body{font-size:15px}.container{width:min(100% - 32px,var(--container))}
            .logo{font-size:16px}.logo-mark{width:35px;height:35px}
            .nav-cta{min-height:42px;padding:0 11px;font-size:13px}
            .download-hero{padding:28px 0 48px}.download-shell{padding:31px 24px;border-radius:21px}
            h1{letter-spacing:-1.3px}.download-copy p{font-size:15px}
            .device-stage{height:320px}.phone{transform:scale(.83)}
            .device-note{right:-3px;bottom:5px}
            .section{padding:61px 0}.section-head{display:block;margin-bottom:24px}.section-intro{margin-top:10px}
            .qr-card{min-height:240px}.qr-layout{margin-top:13px}
            .permission-grid{grid-template-columns:1fr}.permission{padding:16px}
            .cta-band{display:block;padding:32px 25px}.cta-band .btn{margin-top:22px;width:100%}
            .footer-grid{grid-template-columns:1fr 1fr;gap:29px}.footer-intro{grid-column:1/-1}
            .copyright{padding:17px 0;display:block}.copyright span{display:block;margin:4px 0}
        }
        @media(max-width:420px){
            .nav-cta{display:none}.download-shell{padding:28px 20px}.hero-actions .btn{width:100%}
            .detail-row{display:block}.detail-row strong{display:block;text-align:left;margin-top:3px}
            .footer-grid{grid-template-columns:1fr}.footer-intro{grid-column:auto}
        }

/* roulang page: category6 */
:root{
            --plum:#4d275f;
            --plum-deep:#351741;
            --plum-soft:#eee6f2;
            --amber:#f2b84b;
            --coral:#ef765f;
            --mint:#8bc9ad;
            --ink:#252128;
            --muted:#766d78;
            --paper:#fbf8f3;
            --cream:#f3eee7;
            --line:#e5ddd5;
            --white:#fffdf9;
            --shadow:0 14px 38px rgba(57,38,54,.09);
            --shadow-sm:0 6px 18px rgba(57,38,54,.07);
            --radius:18px;
            --radius-sm:11px;
            --container:1200px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input{font:inherit}
        button{cursor:pointer}
        .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(251,248,243,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
        .nav-wrap{height:76px;display:flex;align-items:center;gap:30px}
        .logo{display:flex;align-items:center;gap:11px;font-size:18px;font-weight:900;white-space:nowrap;letter-spacing:-.5px}
        .logo-mark{width:39px;height:39px;border:3px solid var(--ink);border-radius:12px;display:grid;place-items:center;position:relative;background:var(--amber)}
        .logo-mark:before{content:"";width:14px;height:7px;border:2px solid var(--ink);border-radius:8px;box-shadow:8px 0 0 -2px var(--amber)}
        .main-nav{display:flex;align-items:center;gap:21px;margin-left:auto}
        .nav-list{display:flex;align-items:center;gap:21px}
        .nav-list a{font-size:14px;color:#625966;position:relative;padding:27px 0;white-space:nowrap}
        .nav-list a:after{content:"";position:absolute;left:0;right:100%;bottom:18px;height:3px;background:var(--coral);border-radius:4px;transition:.25s}
        .nav-list a:hover,.nav-list a.active{color:var(--ink);font-weight:800}
        .nav-list a:hover:after,.nav-list a.active:after{right:0}
        .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 19px;border-radius:11px;border:1px solid transparent;font-weight:800;transition:.25s}
        .nav-cta,.btn-primary{background:var(--coral);color:#fff}
        .nav-cta:hover,.btn-primary:hover{background:#d85d49;color:#fff;transform:translateY(-2px);box-shadow:0 9px 18px rgba(239,118,95,.23)}
        .btn-secondary{border-color:var(--ink);background:transparent}
        .btn-secondary:hover{background:var(--ink);color:#fff}
        .menu-toggle{display:none;background:transparent;border:1px solid var(--line);border-radius:10px;width:44px;height:44px;font-size:22px;color:var(--ink)}
        .page-hero{padding:82px 0 70px;background:var(--cream);border-bottom:1px solid var(--line)}
        .hero-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:72px;align-items:end}
        .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:#b65335;font-size:13px;font-weight:900;letter-spacing:1px}
        .eyebrow:before,.section-kicker:before{content:"";width:24px;height:3px;background:var(--coral);border-radius:5px}
        h1,h2,h3,p{margin-top:0}
        h1{font-size:clamp(36px,5vw,58px);line-height:1.18;letter-spacing:-2px;margin:18px 0 20px;font-weight:950}
        h2{font-size:clamp(27px,3vw,35px);line-height:1.3;letter-spacing:-1px;margin-bottom:14px}
        h3{font-size:20px;line-height:1.4}
        .hero-text{font-size:18px;color:var(--muted);max-width:700px;margin-bottom:0}
        .hero-panel{background:var(--plum);color:#fff;border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);position:relative;overflow:hidden}
        .hero-panel:after{content:"?";position:absolute;right:22px;bottom:-30px;font-size:150px;line-height:1;font-weight:900;color:rgba(255,255,255,.08)}
        .panel-title{font-size:18px;font-weight:900;margin-bottom:18px}
        .panel-line{display:flex;justify-content:space-between;gap:20px;padding:13px 0;border-bottom:1px solid rgba(255,255,255,.18);font-size:14px}
        .panel-line:last-child{border-bottom:0}
        .status{color:var(--amber);font-weight:800}
        .section{padding:84px 0}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
        .section-intro{color:var(--muted);max-width:530px;margin:0}
        .faq-layout{display:grid;grid-template-columns:260px 1fr;gap:68px;align-items:start}
        .topic-index{position:sticky;top:105px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:12px}
        .topic-index a{display:block;padding:13px 15px;border-radius:10px;color:var(--muted);font-weight:700;transition:.2s}
        .topic-index a:hover,.topic-index a.active{background:var(--plum-soft);color:var(--plum)}
        .topic-index a.active{border-left:3px solid var(--coral)}
        .faq-group{margin-bottom:38px}
        .group-heading{display:flex;align-items:center;gap:12px;margin-bottom:14px}
        .group-heading span{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--amber);font-weight:900}
        .faq-list{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
        .faq-item{border-bottom:1px solid var(--line)}
        .faq-item:last-child{border-bottom:0}
        .faq-question{width:100%;min-height:65px;padding:18px 22px;display:flex;justify-content:space-between;align-items:center;gap:18px;text-align:left;border:0;background:transparent;color:var(--ink);font-weight:850}
        .faq-question:hover{background:#faf4ed;color:var(--plum)}
        .faq-question .plus{font-size:25px;font-weight:400;color:var(--coral);transition:.25s;flex:none}
        .faq-item.open .plus{transform:rotate(45deg)}
        .faq-answer{display:none;padding:0 58px 21px 22px;color:var(--muted);font-size:15px}
        .faq-item.open .faq-answer{display:block}
        .notice{padding:23px 26px;border-left:4px solid var(--mint);background:#edf7f0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#49685a}
        .notice strong{color:#315643}
        .cta{padding:48px 55px;background:var(--plum-deep);color:#fff;border-radius:var(--radius);display:flex;justify-content:space-between;align-items:center;gap:30px;position:relative;overflow:hidden}
        .cta:before{content:"";position:absolute;width:180px;height:180px;border:22px solid rgba(242,184,75,.18);border-radius:50%;right:80px;top:-85px}
        .cta h2{margin-bottom:9px;position:relative}
        .cta p{color:#d9cddd;margin:0;position:relative}
        .cta-actions{display:flex;gap:11px;flex-wrap:wrap;position:relative}
        .cta .btn-secondary{border-color:#fff;color:#fff}
        .cta .btn-secondary:hover{background:#fff;color:var(--plum)}
        footer{background:#241b27;color:#fff;padding:58px 0 22px}
        .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:35px}
        .footer-brand{font-size:22px;font-weight:950;margin-bottom:12px}
        .footer-intro p{color:#b9adb9;max-width:330px;font-size:14px;margin:0}
        .footer-col{display:flex;flex-direction:column;gap:8px}
        .footer-col h3{font-size:15px;color:#f2b84b;margin-bottom:8px}
        .footer-col a{font-size:14px;color:#c8bdc7;transition:.2s}
        .footer-col a:hover{color:#fff;transform:translateX(3px)}
        .copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#9d919d;font-size:12px}
        :focus-visible{outline:3px solid rgba(239,118,95,.45);outline-offset:3px}
        @media(max-width:1050px){
            .nav-wrap{gap:16px}.main-nav{gap:12px}.nav-list{gap:13px}.nav-list a{font-size:13px}
            .hero-layout{gap:40px}.faq-layout{gap:35px}
        }
        @media(max-width:768px){
            .container{width:min(100% - 32px,var(--container))}
            .nav-wrap{height:68px}.logo{font-size:16px}.logo-mark{width:35px;height:35px}
            .menu-toggle{display:block;margin-left:auto}
            .main-nav{display:none;position:absolute;left:0;right:0;top:68px;background:var(--paper);padding:12px 16px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm)}
            .main-nav.show{display:block}
            .nav-list{display:flex;flex-direction:column;align-items:stretch;gap:0}
            .nav-list a{padding:12px 8px}.nav-list a:after{bottom:5px}
            .nav-cta{display:none}
            .page-hero{padding:58px 0 50px}.hero-layout{grid-template-columns:1fr;gap:30px}
            h1{letter-spacing:-1px}
            .section{padding:62px 0}.section-head{display:block}.section-intro{margin-top:12px}
            .faq-layout{grid-template-columns:1fr;gap:28px}.topic-index{position:static;display:grid;grid-template-columns:repeat(2,1fr);gap:4px}
            .faq-question{padding:16px 17px}.faq-answer{padding-left:17px;padding-right:17px}
            .cta{display:block;padding:36px 25px}.cta-actions{margin-top:24px}
            .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}.footer-intro{grid-column:1/-1}
            .copyright{display:block}.copyright span{display:block;margin-bottom:5px}
        }
        @media(max-width:480px){
            .topic-index{grid-template-columns:1fr}.page-hero{padding-top:45px}
            h1{font-size:35px}.hero-text{font-size:16px}.hero-panel{padding:22px}
            .btn{width:100%}.cta-actions{display:grid}.footer-grid{grid-template-columns:1fr}
        }

/* 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}