/* roulang page: index */
:root{
      --ink:#15213a;--muted:#68738b;--paper:#f5f7fb;--white:#fff;--navy:#101a35;
      --cyan:#35d7d2;--violet:#745cff;--orange:#ffad62;--line:#e4e8f1;
      --radius:22px;--shadow:0 18px 55px rgba(25,39,78,.10);--soft:0 8px 24px rgba(25,39,78,.07);
      --container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.8;font-size:16px}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,232,241,.85)}
    .nav-shell{height:82px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}
    .nav-group{display:flex;align-items:center;gap:24px}
    .nav-group.right{justify-content:flex-end}
    .nav-link{font-size:14px;color:#62708a;padding:8px 0;position:relative;white-space:nowrap}
    .nav-link:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--violet);transition:.25s}
    .nav-link:hover,.nav-link.active{color:var(--ink)}
    .nav-link:hover:after,.nav-link.active:after{right:0}
    .brand{font-size:22px;font-weight:800;letter-spacing:1px;color:var(--navy);white-space:nowrap}
    .brand span{color:var(--violet)}
    .nav-cta{background:var(--navy);color:#fff!important;border-radius:99px;padding:10px 18px!important}
    .nav-cta:hover{background:var(--violet);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:25px}
    .hero{min-height:650px;padding:90px 0 72px;background:linear-gradient(90deg,rgba(12,21,49,.93),rgba(16,27,63,.76)),url("/assets/images/backpic/back-1.webp") center/cover;position:relative;overflow:hidden;color:#fff}
    .hero:before{content:"";position:absolute;width:430px;height:430px;border:1px solid rgba(53,215,210,.3);border-radius:50%;right:8%;top:90px;box-shadow:0 0 0 35px rgba(53,215,210,.04),0 0 0 70px rgba(53,215,210,.025)}
    .hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center;position:relative;z-index:1}
    .eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(53,215,210,.45);border-radius:99px;padding:6px 13px;color:var(--cyan);font-size:13px;letter-spacing:1px}
    h1{font-size:clamp(36px,5vw,68px);line-height:1.2;margin:22px 0 22px;letter-spacing:-2px}
    .hero-copy{font-size:18px;line-height:2;color:#d6dced;max-width:650px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:34px 0}
    .btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 23px;border-radius:12px;border:1px solid transparent;font-weight:700;cursor:pointer}
    .btn-primary{background:var(--cyan);color:#0d2034;box-shadow:0 10px 25px rgba(53,215,210,.2)}
    .btn-primary:hover{background:#70e9dd;transform:translateY(-2px)}
    .btn-light{background:#fff;color:var(--navy)}
    .btn-light:hover{background:var(--orange);color:var(--navy)}
    .btn-outline{border-color:#ccd4e8;color:var(--ink);background:transparent}
    .btn-outline:hover{border-color:var(--violet);color:var(--violet)}
    .hero-stats{display:flex;gap:35px;flex-wrap:wrap;margin-top:32px}
    .stat strong{display:block;font-size:28px;color:#fff;line-height:1.3}
    .stat span{font-size:13px;color:#aeb9d1}
    .launch-panel{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);padding:28px;border-radius:28px;backdrop-filter:blur(10px);box-shadow:var(--shadow)}
    .launch-panel h3{font-size:22px;margin:0 0 18px}
    .countdown{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0}
    .count-item{background:rgba(10,18,44,.55);border-radius:15px;padding:13px;text-align:center}
    .count-item b{display:block;font-size:29px;color:var(--cyan)}
    .count-item small{color:#b8c2d8}
    .signal-list{list-style:none;margin:20px 0;padding:0}
    .signal-list li{padding:10px 0;border-bottom:1px solid rgba(255,255,255,.14);color:#e0e6f3}
    .signal-list li:before{content:"✦";color:var(--orange);margin-right:10px}
    .section{padding:88px 0}
    .section.alt{background:#fff}
    .section.dark{background:var(--navy);color:#fff}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:35px}
    .section-head h2{font-size:clamp(28px,3vw,42px);line-height:1.3;margin:0 0 9px}
    .section-head p{max-width:680px;color:var(--muted);margin:0}
    .dark .section-head p{color:#aab6d0}
    .kicker{font-size:13px;color:var(--violet);font-weight:800;letter-spacing:2px;text-transform:uppercase}
    .news-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:25px}
    .news-list,.feature-news,.service-card,.theme-card,.review,.latest-box,.compare,.safety-box,.story-box,.faq-item,.resource-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--soft)}
    .news-list{padding:8px 28px}
    .news-row{display:grid;grid-template-columns:100px 1fr auto;gap:18px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}
    .news-row:last-child{border:0}.news-date{color:var(--violet);font-size:13px}.news-row h3{font-size:17px;margin:0}.news-row p{margin:4px 0 0;color:var(--muted);font-size:14px}
    .text-link{font-size:13px;color:var(--violet);font-weight:700;white-space:nowrap}.text-link:hover{color:var(--orange)}
    .feature-news{overflow:hidden}.feature-news img{width:100%;height:210px;object-fit:cover}.feature-news .inner{padding:24px}.feature-news h3{font-size:24px;margin:4px 0 10px}.feature-news p{color:var(--muted)}
    .service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .service-card{padding:28px;min-height:245px}.service-card:nth-child(2){transform:translateY(22px)}.service-card:nth-child(3){background:var(--navy);color:#fff;border-color:var(--navy)}
    .icon{width:44px;height:44px;border-radius:14px;background:#eef0ff;color:var(--violet);display:grid;place-items:center;font-size:21px;margin-bottom:20px}.service-card:nth-child(3) .icon{background:rgba(53,215,210,.15);color:var(--cyan)}
    .service-card h3,.theme-card h3,.resource-card h3{font-size:20px;margin:0 0 9px}.service-card p,.theme-card p,.resource-card p{color:var(--muted);font-size:14px}.service-card:nth-child(3) p{color:#b4bfd6}
    .app-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:45px;align-items:center}.app-image{border-radius:30px;overflow:hidden;box-shadow:var(--shadow);transform:rotate(-2deg)}.app-copy h2{font-size:40px;margin:10px 0 17px}.app-copy p{color:var(--muted)}.check-list{list-style:none;padding:0;margin:24px 0}.check-list li{margin:12px 0}.check-list li:before{content:"✓";color:var(--violet);font-weight:bold;margin-right:12px}
    .theme-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.theme-card{overflow:hidden}.theme-card img{width:100%;height:145px;object-fit:cover}.theme-card .inner{padding:18px}.theme-card small{color:var(--violet)}
    .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.metric{padding:27px;border:1px solid rgba(255,255,255,.14);border-radius:20px;background:rgba(255,255,255,.055)}.metric strong{font-size:37px;color:var(--cyan);display:block}.metric span{color:#b5c0d5;font-size:14px}
    .process{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.process-step{padding:25px;border-top:2px solid var(--line);position:relative}.process-step:before{content:attr(data-no);position:absolute;top:-18px;left:20px;background:var(--violet);color:#fff;border-radius:50%;width:34px;height:34px;display:grid;place-items:center;font-weight:bold}.process-step h3{margin:20px 0 8px}.process-step p{font-size:14px;color:var(--muted)}
    .review-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.review{padding:26px}.stars{color:var(--orange);letter-spacing:4px}.review p{font-size:17px;color:#45516a}.review small{color:var(--muted)}
    .latest-box{padding:12px 28px}.latest-row{display:grid;grid-template-columns:140px 1fr 100px;gap:20px;align-items:center;padding:17px 0;border-bottom:1px solid var(--line)}.latest-row:last-child{border-bottom:0}.status{color:#3b9d82;font-size:13px}
    .compare-wrap{overflow:auto}.compare{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;background:#fff}.compare th,.compare td{padding:18px 20px;border-bottom:1px solid var(--line);text-align:left}.compare th{background:#f0f2ff;color:var(--violet)}.compare tr:last-child td{border:0}.compare td:not(:first-child){text-align:center}.yes{color:#159b7a;font-size:20px}.no{color:#a4adbd}
    .safety-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.safety-box{padding:28px}.safety-box h3{margin:0 0 10px}.safety-box p{color:var(--muted);font-size:14px}.safety-tag{display:inline-block;background:#effaf7;color:#16866d;padding:5px 10px;border-radius:99px;font-size:12px}
    .story-box{display:grid;grid-template-columns:1fr 1fr;overflow:hidden}.story-box img{width:100%;height:100%;object-fit:cover;min-height:320px}.story-content{padding:40px}.story-content p{color:var(--muted);font-size:16px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.faq-item{padding:22px 25px}.faq-item summary{cursor:pointer;font-weight:700;list-style:none}.faq-item summary:after{content:"＋";float:right;color:var(--violet)}.faq-item[open] summary:after{content:"－"}.faq-item p{color:var(--muted);font-size:14px;margin:15px 0 0}
    .cta{background:linear-gradient(110deg,var(--violet),#46339d);color:#fff;border-radius:28px;padding:48px 55px;display:flex;justify-content:space-between;align-items:center;gap:30px}.cta h2{font-size:34px;margin:0 0 8px}.cta p{color:#dbd7ff;margin:0}
    .resource-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.resource-card{padding:24px}.resource-card p{margin-bottom:20px}
    .site-footer{background:#0b132a;color:#9eabc6;padding:55px 0 25px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}.footer-brand{color:#fff;font-size:23px;font-weight:800}.footer-brand span{color:var(--cyan)}.site-footer h4{color:#fff;margin:0 0 14px}.site-footer a:hover{color:var(--cyan)}.footer-links{list-style:none;margin:0;padding:0;font-size:14px}.footer-links li{margin:8px 0}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:20px;font-size:13px;line-height:2}
    :focus-visible{outline:3px solid rgba(53,215,210,.7);outline-offset:3px}
    @media(max-width:1024px){.nav-group{gap:13px}.theme-grid{grid-template-columns:repeat(2,1fr)}.hero-grid{gap:35px}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.nav-shell{display:flex;justify-content:space-between;height:70px}.menu-toggle{display:block}.nav-group{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;padding:18px 20px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav-group.open{display:flex}.nav-group.right{justify-content:flex-start}.brand{order:1}.menu-toggle{order:2}.hero{padding:65px 0}.hero-grid,.news-layout,.app-layout,.story-box{grid-template-columns:1fr}.hero:before{right:-160px;top:420px}.service-grid,.metric-grid{grid-template-columns:repeat(2,1fr)}.service-card:nth-child(2){transform:none}.process{grid-template-columns:repeat(2,1fr);gap:20px}.process-step{border-top:0;border-left:2px solid var(--line)}.review-grid,.faq-grid{grid-template-columns:1fr}.cta{display:block;padding:35px 28px}.cta .btn{margin-top:22px}.news-row{grid-template-columns:75px 1fr}.news-row .text-link{grid-column:2}}
    @media(max-width:520px){.container{width:min(100% - 28px,var(--container))}.section{padding:58px 0}.section-head{display:block}.section-head h2{font-size:30px}.hero h1{font-size:39px}.hero-copy{font-size:16px}.hero-actions .btn{width:100%}.service-grid,.metric-grid,.theme-grid,.process,.resource-grid{grid-template-columns:1fr}.countdown{gap:6px}.app-copy h2{font-size:30px}.footer-grid{grid-template-columns:1fr}.latest-row{grid-template-columns:85px 1fr}.latest-row .status{grid-column:2}.compare th,.compare td{padding:14px 12px;font-size:13px}}

/* roulang page: category3 */
:root{
      --ink:#15213a;--muted:#68738b;--paper:#f5f7fb;--white:#fff;--navy:#101a35;
      --cyan:#35d7d2;--violet:#745cff;--orange:#ffad62;--line:#e4e8f1;
      --radius:22px;--shadow:0 18px 55px rgba(25,39,78,.10);--soft:0 8px 24px rgba(25,39,78,.07);
      --container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.8;font-size:16px}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid rgba(53,215,210,.65);outline-offset:4px}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,232,241,.85)}
    .nav-shell{height:82px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}
    .nav-group{display:flex;align-items:center;gap:24px}
    .nav-group.right{justify-content:flex-end}
    .nav-link{font-size:14px;color:#62708a;padding:8px 0;position:relative;white-space:nowrap}
    .nav-link:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--violet);transition:.25s}
    .nav-link:hover,.nav-link.active{color:var(--ink)}
    .nav-link:hover:after,.nav-link.active:after{right:0}
    .brand{font-size:22px;font-weight:800;letter-spacing:1px;color:var(--navy);white-space:nowrap}
    .brand span{color:var(--violet)}
    .nav-cta{background:var(--navy);color:#fff!important;border-radius:99px;padding:10px 18px!important}
    .nav-cta:hover{background:var(--violet);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:25px}
    .hero{padding:74px 0 70px;background:linear-gradient(90deg,rgba(12,21,49,.96),rgba(16,27,63,.78)),url("/assets/images/backpic/back-2.webp") center/cover;color:#fff;position:relative;overflow:hidden}
    .hero:after{content:"";position:absolute;width:470px;height:470px;border:1px solid rgba(53,215,210,.25);border-radius:50%;right:-100px;top:-150px;box-shadow:0 0 0 35px rgba(53,215,210,.04),0 0 0 70px rgba(53,215,210,.025)}
    .hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:65px;align-items:center;position:relative;z-index:1}
    .eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(53,215,210,.45);border-radius:99px;padding:6px 13px;color:var(--cyan);font-size:13px;letter-spacing:1px}
    h1{font-size:clamp(38px,5vw,68px);line-height:1.18;letter-spacing:-2px;margin:20px 0 18px}
    .hero-copy{font-size:18px;line-height:2;color:#d6dced;max-width:650px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 0}
    .btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 23px;border-radius:12px;border:1px solid transparent;font-weight:700;cursor:pointer}
    .btn-primary{background:var(--cyan);color:#0d2034;box-shadow:0 10px 25px rgba(53,215,210,.2)}
    .btn-primary:hover{background:#70e9dd;transform:translateY(-2px)}
    .btn-light{background:#fff;color:var(--navy)}
    .btn-light:hover{background:var(--orange);color:var(--navy)}
    .btn-outline{border-color:#ccd4e8;color:var(--ink);background:transparent}
    .btn-outline:hover{border-color:var(--violet);color:var(--violet)}
    .ranking-panel{background:rgba(8,17,43,.7);border:1px solid rgba(255,255,255,.16);border-radius:26px;padding:28px;box-shadow:0 25px 60px rgba(0,0,0,.22)}
    .panel-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
    .panel-top strong{font-size:20px}.live{font-size:12px;color:var(--cyan)}
    .rank-row{display:grid;grid-template-columns:38px 1fr 82px;gap:14px;align-items:center;padding:17px 0;border-bottom:1px solid rgba(255,255,255,.13)}
    .rank-row:last-child{border:0}
    .rank-no{font-size:22px;font-weight:800;color:var(--orange)}
    .rank-name b{display:block;color:#fff}.rank-name small{color:#a9b5cf}
    .rank-bar{height:7px;border-radius:10px;background:#2b395d;overflow:hidden;margin-top:8px}
    .rank-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--cyan),var(--violet));border-radius:10px}
    .rank-score{text-align:right;color:var(--cyan);font-weight:700}
    .section{padding:82px 0}.section.alt{background:#fff}.section.dark{background:var(--navy);color:#fff}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:34px}
    .section-head h2{font-size:clamp(28px,3vw,42px);line-height:1.3;margin:0 0 9px}
    .section-head p{max-width:680px;color:var(--muted);margin:0}
    .dark .section-head p{color:#aab6d0}
    .intro-layout{display:grid;grid-template-columns:1.12fr .88fr;gap:28px;align-items:stretch}
    .story-box,.service-card,.theme-card,.review,.faq-item,.resource-card,.process-card,.price-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--soft)}
    .story-box{padding:34px}.story-box h3{font-size:26px;margin:0 0 14px}.story-box p{color:var(--muted);margin:0 0 14px}
    .image-card{overflow:hidden;border-radius:var(--radius);min-height:100%}.image-card img{width:100%;height:100%;object-fit:cover}
    .service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .service-card{padding:27px;min-height:245px}.service-card:nth-child(2){transform:translateY(18px)}
    .service-card:nth-child(3){background:var(--navy);color:#fff;border-color:var(--navy)}
    .service-card h3{font-size:20px;margin:12px 0 9px}.service-card p{color:var(--muted);font-size:14px}.service-card:nth-child(3) p{color:#b4bfd6}
    .icon{width:45px;height:45px;border-radius:14px;display:grid;place-items:center;background:#eef0ff;color:var(--violet);font-weight:800;font-size:20px}
    .service-card:nth-child(3) .icon{background:rgba(53,215,210,.15);color:var(--cyan)}
    .check-list{list-style:none;padding:0;margin:20px 0}.check-list li{margin:10px 0;color:#dbe2f2}.check-list li:before{content:"✓";color:var(--cyan);font-weight:bold;margin-right:10px}
    .scene-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:25px}
    .scene-main{padding:34px;background:var(--navy);border-radius:var(--radius);color:#fff;background-image:linear-gradient(120deg,rgba(16,26,53,.88),rgba(16,26,53,.55)),url("/assets/images/coverpic/cover-5.webp");background-size:cover;background-position:center}
    .scene-main h3{font-size:29px;margin:10px 0}.scene-main p{color:#c3cee4}
    .scene-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}.scene-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:23px}.scene-item h4{margin:0 0 6px}.scene-item p{margin:0;color:var(--muted);font-size:14px}
    .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.metric{padding:24px;border-top:3px solid var(--cyan);background:#fff;border-radius:16px;box-shadow:var(--soft)}.metric b{font-size:30px;color:var(--violet);display:block}.metric span{color:var(--muted);font-size:14px}
    .feature-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:30px;align-items:center}.feature-layout img{border-radius:var(--radius);width:100%;height:330px;object-fit:cover}.feature-copy h3{font-size:30px;margin:0 0 14px}.feature-copy p{color:var(--muted)}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.process-card{padding:24px;position:relative}.process-card em{font-style:normal;color:var(--violet);font-weight:800;font-size:13px}.process-card h3{font-size:18px;margin:8px 0}.process-card p{color:var(--muted);font-size:14px;margin:0}
    .reviews{display:grid;grid-template-columns:1fr 1fr;gap:20px}.review{padding:28px}.review p{font-size:18px;margin:0 0 18px}.review small{color:var(--muted)}
    .price-layout{display:grid;grid-template-columns:1fr 1fr;gap:22px}.price-box{padding:30px}.price-box.highlight{background:#f0fffc;border-color:var(--cyan)}.price-box h3{margin:0;font-size:23px}.price-box p{color:var(--muted)}.price-tag{font-size:32px;font-weight:800;color:var(--violet);margin:18px 0}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.faq-item{padding:21px 24px}.faq-item summary{cursor:pointer;font-weight:700;list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"＋";float:right;color:var(--violet)}.faq-item[open] summary:after{content:"−"}.faq-item p{color:var(--muted);font-size:14px;margin:14px 0 0}
    .cta{padding:65px 0;background:linear-gradient(110deg,var(--violet),#4233a7);color:#fff}.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{font-size:34px;margin:0 0 8px}.cta p{margin:0;color:#ddd9ff}
    .site-footer{background:#0c152c;color:#c2cbe0;padding:58px 0 25px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}.footer-brand{font-size:24px;font-weight:800;color:#fff}.footer-brand span{color:var(--cyan)}.site-footer p{color:#8996b2;font-size:14px}.site-footer h4{color:#fff;margin:0 0 15px;font-size:15px}.footer-links{list-style:none;padding:0;margin:0}.footer-links li{margin:7px 0;font-size:14px}.footer-links a:hover{color:var(--cyan)}.copyright{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;margin-top:35px;color:#8996b2;font-size:13px}.copyright a{color:#b9c5df}.copyright a:hover{color:var(--cyan)}
    @media(max-width:1024px){.hero-grid{gap:35px}.service-grid{grid-template-columns:1fr 1fr}.service-card:nth-child(2){transform:none}.steps{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 30px))}.nav-shell{height:70px;grid-template-columns:1fr auto}.nav-group{display:none}.nav-shell .brand{justify-self:center}.menu-toggle{display:block;justify-self:end}.nav-cta{display:none}.hero{padding:60px 0}.hero-grid,.intro-layout,.scene-layout,.feature-layout,.price-layout{grid-template-columns:1fr}.ranking-panel{margin-top:10px}.section{padding:62px 0}.section-head{display:block}.section-head p{margin-top:10px}.scene-list,.reviews,.faq-grid{grid-template-columns:1fr}.metric-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:520px){h1{font-size:39px;letter-spacing:-1px}.hero-copy{font-size:16px}.service-grid,.steps,.metric-grid{grid-template-columns:1fr}.cta-inner{display:block}.cta .btn{margin-top:23px;width:100%}.footer-grid{grid-template-columns:1fr}.story-box{padding:25px}.rank-row{grid-template-columns:30px 1fr 65px}}

/* roulang page: category4 */
:root{
      --ink:#15213a;--muted:#68738b;--paper:#f5f7fb;--white:#fff;--navy:#101a35;
      --cyan:#35d7d2;--violet:#745cff;--orange:#ffad62;--line:#e4e8f1;
      --radius:22px;--shadow:0 18px 55px rgba(25,39,78,.10);--soft:0 8px 24px rgba(25,39,78,.07);
      --container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.8;font-size:16px}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button:focus,a:focus,summary:focus{outline:3px solid rgba(116,92,255,.28);outline-offset:4px}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,232,241,.85)}
    .nav-shell{height:82px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}
    .nav-group{display:flex;align-items:center;gap:24px}
    .nav-group.right{justify-content:flex-end}
    .nav-link{font-size:14px;color:#62708a;padding:8px 0;position:relative;white-space:nowrap}
    .nav-link:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--violet);transition:.25s}
    .nav-link:hover,.nav-link.active{color:var(--ink)}
    .nav-link:hover:after,.nav-link.active:after{right:0}
    .brand{font-size:22px;font-weight:800;letter-spacing:1px;color:var(--navy);white-space:nowrap}
    .brand span{color:var(--violet)}
    .nav-cta{background:var(--navy);color:#fff!important;border-radius:99px;padding:10px 18px!important}
    .nav-cta:hover{background:var(--violet);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:25px}
    .hero{min-height:560px;padding:72px 0 84px;background:linear-gradient(90deg,rgba(12,21,49,.95),rgba(16,27,63,.72)),url("/assets/images/backpic/back-2.webp") center/cover;position:relative;overflow:hidden;color:#fff}
    .hero:after{content:"";position:absolute;right:-130px;bottom:-220px;width:490px;height:490px;border:1px solid rgba(53,215,210,.28);border-radius:50%;box-shadow:0 0 0 30px rgba(53,215,210,.04),0 0 0 65px rgba(53,215,210,.025)}
    .hero-grid{display:grid;grid-template-columns:5fr 7fr;gap:58px;align-items:center;position:relative;z-index:1}
    .hero-copy{padding:25px 0}
    .eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(53,215,210,.45);border-radius:99px;padding:6px 13px;color:var(--cyan);font-size:13px;letter-spacing:1px}
    h1{font-size:clamp(38px,5vw,68px);line-height:1.16;letter-spacing:-2px;margin:22px 0 18px}
    .hero-copy p{font-size:18px;line-height:2;color:#d6dced;max-width:530px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0}
    .btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 23px;border-radius:12px;border:1px solid transparent;font-weight:700;cursor:pointer}
    .btn-primary{background:var(--cyan);color:#0d2034;box-shadow:0 10px 25px rgba(53,215,210,.2)}
    .btn-primary:hover{background:#70e9dd;transform:translateY(-2px)}
    .btn-light{background:#fff;color:var(--navy)}
    .btn-light:hover{background:var(--orange)}
    .btn-outline{border-color:#ccd4e8;color:var(--ink);background:transparent}
    .btn-outline:hover{border-color:var(--violet);color:var(--violet)}
    .hero-kpis{display:flex;gap:16px;flex-wrap:wrap;margin-top:26px}
    .kpi{padding:12px 16px;background:rgba(10,18,44,.56);border:1px solid rgba(255,255,255,.12);border-radius:15px}
    .kpi strong{display:block;color:var(--cyan);font-size:25px;line-height:1.2}
    .kpi small{color:#b8c2d8}
    .hero-visual{transform:translate(18px,24px) rotate(2.5deg);border-radius:28px;overflow:hidden;border:8px solid rgba(255,255,255,.12);box-shadow:0 25px 70px rgba(0,0,0,.3)}
    .hero-visual img{width:100%;height:390px;object-fit:cover}
    .section{padding:78px 0}
    .section.alt{background:#fff}
    .section.dark{background:var(--navy);color:#fff}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:32px}
    .section-head h2{font-size:clamp(28px,3vw,42px);line-height:1.3;margin:0 0 8px}
    .section-head p{max-width:680px;color:var(--muted);margin:0}
    .dark .section-head p{color:#aab6d0}
    .lead{font-size:18px;color:var(--muted);max-width:850px}
    .intro-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:42px;align-items:center}
    .intro-box{background:#fff;padding:34px;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--soft)}
    .intro-box h3{font-size:25px;margin:0 0 12px}
    .check-list{list-style:none;padding:0;margin:20px 0 0}
    .check-list li{margin:11px 0}
    .check-list li:before{content:"✓";color:var(--violet);font-weight:bold;margin-right:12px}
    .feature-image{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
    .feature-image img{width:100%;height:330px;object-fit:cover}
    .benefit-grid{display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:20px;align-items:stretch}
    .benefit-card,.scene-card,.case-box,.faq-item,.plan-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--soft)}
    .benefit-card{padding:27px;min-height:220px}
    .benefit-card:nth-child(2){background:var(--navy);color:#fff;transform:translateY(18px)}
    .benefit-card:nth-child(2) p{color:#bbc5d9}
    .number{font-size:14px;color:var(--violet);font-weight:800;letter-spacing:1px}
    .benefit-card h3,.scene-card h3,.plan-card h3{font-size:21px;margin:10px 0}
    .benefit-card p,.scene-card p,.plan-card p{color:var(--muted);font-size:14px}
    .scene-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:18px}
    .scene-card{overflow:hidden}
    .scene-card img{height:155px;width:100%;object-fit:cover}
    .scene-card .inner{padding:20px}
    .scene-card.large{grid-row:span 2}
    .scene-card.large img{height:360px}
    .process{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);overflow:hidden}
    .process-item{padding:27px;background:rgba(255,255,255,.045);min-height:180px}
    .process-item strong{display:block;color:var(--cyan);font-size:30px;margin-bottom:12px}
    .process-item h3{font-size:18px;margin:0 0 7px}
    .process-item p{color:#b7c3da;font-size:14px;margin:0}
    .case-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:25px;align-items:stretch}
    .case-box{padding:30px}
    .case-box.emphasis{background:linear-gradient(135deg,#eefcfb,#fff7ed);border:0}
    .case-box h3{font-size:25px;margin:4px 0 12px}
    .quote{font-size:20px;line-height:1.7;color:var(--navy)}
    .metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:22px}
    .metric{padding:17px;border-top:2px solid var(--cyan)}
    .metric b{display:block;font-size:28px;color:var(--violet)}
    .metric span{font-size:13px;color:var(--muted)}
    .plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .plan-card{padding:27px}
    .plan-card.featured{border:2px solid var(--violet);position:relative}
    .plan-card.featured:before{content:"更多权益";position:absolute;right:20px;top:20px;background:#eeeaff;color:var(--violet);padding:4px 10px;border-radius:99px;font-size:12px}
    .plan-price{font-size:24px;font-weight:800;color:var(--navy);margin:18px 0}
    .plan-card ul{list-style:none;padding:0;color:var(--muted);font-size:14px}
    .plan-card li{margin:9px 0}.plan-card li:before{content:"·";color:var(--orange);font-size:22px;margin-right:9px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    .faq-item{padding:20px 23px}
    .faq-item summary{cursor:pointer;font-weight:700;list-style:none}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";float:right;color:var(--violet)}
    .faq-item[open] summary:after{content:"－"}
    .faq-item p{color:var(--muted);font-size:14px;margin:13px 0 0}
    .cta{padding:58px 0;background:linear-gradient(115deg,var(--violet),#4a3ab7);color:#fff}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta h2{margin:0 0 8px;font-size:34px}.cta p{margin:0;color:#e0ddff}
    .site-footer{background:#0b132a;color:#bac5dc;padding:58px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{font-size:23px;font-weight:800;color:#fff}.footer-brand span{color:var(--cyan)}
    .footer-grid p{font-size:14px;max-width:250px}
    .footer-grid h4{color:#fff;font-size:15px;margin:4px 0 15px}
    .footer-links{list-style:none;margin:0;padding:0;font-size:14px}.footer-links li{margin:7px 0}
    .footer-links a:hover{color:var(--cyan)}
    .copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;font-size:12px;color:#8795b0;line-height:2}
    .copyright a:hover{color:var(--cyan)}
    @media(max-width:1024px){
      .nav-group{gap:14px}.hero-grid{gap:30px}.benefit-grid,.scene-grid{grid-template-columns:1fr 1fr}.scene-card.large{grid-column:span 2;grid-row:auto}.scene-card.large img{height:260px}.footer-grid{grid-template-columns:2fr 1fr 1fr}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 30px))}
      .nav-shell{height:70px;display:flex;justify-content:space-between}.brand{order:1}.menu-toggle{display:block;order:3}.nav-group{display:none;position:absolute;top:70px;left:15px;right:15px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:5px}.nav-group.open{display:flex}.nav-group.left{order:2}.nav-group.right{order:4}.nav-link{padding:10px 5px}.hero{padding:55px 0 65px}.hero-grid,.intro-layout,.case-layout{grid-template-columns:1fr}.hero-visual{transform:none;margin-top:18px}.hero-visual img{height:280px}.section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:12px}.benefit-grid,.scene-grid,.plan-grid,.faq-grid{grid-template-columns:1fr}.benefit-card:nth-child(2){transform:none}.scene-card.large{grid-column:auto}.scene-card.large img{height:220px}.process{grid-template-columns:1fr 1fr}.cta-inner{display:block}.cta .btn{margin-top:24px}.footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:520px){
      h1{font-size:40px}.hero-copy p{font-size:16px}.hero-actions .btn{width:100%}.hero-kpis{gap:8px}.kpi{flex:1;min-width:105px}.process{grid-template-columns:1fr}.metric-row{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:22px}.footer-grid>div:first-child{grid-column:span 2}
    }

/* roulang page: category7 */
:root{
      --ink:#15213a;--muted:#68738b;--paper:#f5f7fb;--white:#fff;--navy:#101a35;
      --cyan:#35d7d2;--violet:#745cff;--orange:#ffad62;--line:#e4e8f1;
      --radius:22px;--shadow:0 18px 55px rgba(25,39,78,.10);--soft:0 8px 24px rgba(25,39,78,.07);
      --container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.8;font-size:16px}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button:focus,a:focus,summary:focus{outline:3px solid rgba(53,215,210,.42);outline-offset:4px}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.93);backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,232,241,.85)}
    .nav-shell{height:82px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}
    .nav-group{display:flex;align-items:center;gap:24px}
    .nav-group.right{justify-content:flex-end}
    .nav-link{font-size:14px;color:#62708a;padding:8px 0;position:relative;white-space:nowrap}
    .nav-link:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--violet);transition:.25s}
    .nav-link:hover,.nav-link.active{color:var(--ink)}
    .nav-link:hover:after,.nav-link.active:after{right:0}
    .brand{font-size:22px;font-weight:800;letter-spacing:1px;color:var(--navy);white-space:nowrap}
    .brand span,.footer-brand span{color:var(--violet)}
    .nav-cta{background:var(--navy);color:#fff!important;border-radius:99px;padding:10px 18px!important}
    .nav-cta:hover{background:var(--violet);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:25px}
    .inner-hero{padding:76px 0 68px;background:linear-gradient(105deg,rgba(12,21,49,.95),rgba(16,27,63,.76)),url("/assets/images/backpic/back-2.webp") center/cover;color:#fff;position:relative;overflow:hidden}
    .inner-hero:after{content:"";position:absolute;width:360px;height:360px;border:1px solid rgba(53,215,210,.34);border-radius:50%;right:7%;top:45px;box-shadow:0 0 0 32px rgba(53,215,210,.05),0 0 0 68px rgba(53,215,210,.025)}
    .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;position:relative;z-index:1}
    .eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(53,215,210,.45);border-radius:99px;padding:6px 13px;color:var(--cyan);font-size:13px;letter-spacing:1px}
    h1{font-size:clamp(36px,5vw,66px);line-height:1.18;letter-spacing:-2px;margin:20px 0 18px}
    .hero-copy{font-size:18px;line-height:2;color:#d6dced;max-width:640px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 0}
    .btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 23px;border-radius:12px;border:1px solid transparent;font-weight:700;cursor:pointer}
    .btn-primary{background:var(--cyan);color:#0d2034;box-shadow:0 10px 25px rgba(53,215,210,.2)}
    .btn-primary:hover{background:#70e9dd;transform:translateY(-2px)}
    .btn-light{background:#fff;color:var(--navy)}
    .btn-light:hover{background:var(--orange);color:var(--navy)}
    .btn-outline{border-color:#ccd4e8;color:var(--ink);background:transparent}
    .btn-outline:hover{border-color:var(--violet);color:var(--violet)}
    .profile-panel{background:rgba(255,255,255,.96);color:var(--ink);padding:25px;border-radius:26px;box-shadow:var(--shadow);max-width:440px;margin-left:auto}
    .profile-top{display:flex;align-items:center;gap:16px;padding-bottom:20px;border-bottom:1px solid var(--line)}
    .avatar{width:62px;height:62px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(135deg,var(--violet),var(--cyan));color:#fff;font-size:25px;font-weight:800}
    .profile-top h3{margin:0;font-size:21px}.profile-top p{margin:2px 0 0;color:var(--muted);font-size:13px}
    .profile-data{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding:20px 0}
    .profile-data strong{display:block;font-size:24px;color:var(--navy)}.profile-data span{font-size:12px;color:var(--muted)}
    .profile-note{background:#f0f7fb;border-radius:15px;padding:13px 15px;font-size:13px;color:#52617a}
    .section{padding:82px 0}.section.alt{background:#fff}.section.dark{background:var(--navy);color:#fff}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:34px}
    .section-head h2{font-size:clamp(28px,3vw,42px);line-height:1.3;margin:0 0 9px}
    .section-head p{max-width:680px;color:var(--muted);margin:0}.dark .section-head p{color:#aab6d0}
    .section-kicker{color:var(--violet);font-size:13px;font-weight:800;letter-spacing:1px;text-transform:uppercase}
    .value-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:stretch}
    .feature-image{border-radius:var(--radius);overflow:hidden;min-height:390px;position:relative}
    .feature-image img{width:100%;height:100%;object-fit:cover}
    .image-caption{position:absolute;left:22px;right:22px;bottom:20px;color:#fff;background:rgba(16,26,53,.78);backdrop-filter:blur(8px);padding:14px 17px;border-radius:14px}
    .benefit-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .benefit-card,.scene-card,.trust-card,.price-card,.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--soft)}
    .benefit-card{padding:25px}.benefit-card:nth-child(2){transform:translateY(20px);background:#f0fbfa}.benefit-card:nth-child(3){background:#f8f5ff}
    .icon{width:42px;height:42px;display:grid;place-items:center;border-radius:13px;background:#eeeaff;color:var(--violet);font-weight:800;margin-bottom:17px}
    .benefit-card h3,.scene-card h3,.trust-card h3,.price-card h3{margin:0 0 8px;font-size:20px}.benefit-card p,.scene-card p,.trust-card p,.price-card p{margin:0;color:var(--muted);font-size:14px}
    .scene-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px}
    .scene-card{padding:28px;min-height:190px}.scene-card strong{display:block;font-size:14px;color:var(--violet);margin-bottom:14px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:23px 20px;border-top:3px solid var(--cyan);background:#fff;border-radius:0 0 18px 18px;box-shadow:var(--soft)}
    .step b{display:block;color:var(--violet);font-size:14px;margin-bottom:10px}.step h3{font-size:18px;margin:0 0 8px}.step p{margin:0;color:var(--muted);font-size:14px}
    .trust-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:center}
    .trust-card{padding:30px}.trust-list{list-style:none;padding:0;margin:20px 0 0}.trust-list li{padding:13px 0;border-bottom:1px solid var(--line);color:#4e5a70}.trust-list li:before{content:"✓";color:var(--violet);font-weight:bold;margin-right:12px}
    .trust-image{border-radius:var(--radius);overflow:hidden}.trust-image img{width:100%;height:330px;object-fit:cover}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}.metric{padding:24px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:18px}.metric strong{display:block;font-size:31px;color:var(--cyan)}.metric span{font-size:13px;color:#b8c2d8}
    .price-layout{display:grid;grid-template-columns:1fr 1fr;gap:22px}.price-card{padding:30px}.price-card.highlight{background:var(--navy);color:#fff;border-color:var(--navy)}.price-card.highlight p{color:#b7c1d8}.price-card ul{list-style:none;padding:0;margin:20px 0}.price-card li{margin:10px 0;color:var(--muted);font-size:14px}.highlight li{color:#d7deed}.price-card li:before{content:"•";color:var(--orange);margin-right:10px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.faq-item{padding:21px 24px}.faq-item summary{cursor:pointer;font-weight:700;list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"＋";float:right;color:var(--violet)}.faq-item[open] summary:after{content:"－"}.faq-item p{color:var(--muted);font-size:14px;margin:13px 0 0}
    .cta{padding:65px 0;background:linear-gradient(110deg,var(--violet),#4b86d9);color:#fff}.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:28px}.cta h2{font-size:clamp(28px,3vw,42px);margin:0 0 8px}.cta p{color:#e8eaff;margin:0}
    .site-footer{background:#0c142b;color:#fff;padding:58px 0 24px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}.footer-brand{font-size:24px;font-weight:800}.site-footer p{color:#aeb9d0;font-size:14px;max-width:250px}.site-footer h4{font-size:15px;margin:4px 0 14px}.footer-links{list-style:none;margin:0;padding:0}.footer-links li{margin:8px 0}.footer-links a{color:#aeb9d0;font-size:13px}.footer-links a:hover{color:var(--cyan)}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding-top:20px;color:#8f9bb6;font-size:12px;line-height:2}.copyright a{color:#b7c1d8}.copyright a:hover{color:var(--cyan)}
    @media(max-width:1024px){.hero-grid,.value-layout,.trust-layout{grid-template-columns:1fr 1fr;gap:28px}.steps{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 30px))}.nav-shell{height:68px;grid-template-columns:auto 1fr auto}.nav-shell .brand{justify-self:center;grid-column:2}.nav-group.left{display:none}.nav-group.right{justify-content:flex-end}.menu-toggle{display:block}.nav-cta{display:none}.hero-grid,.value-layout,.scene-layout,.trust-layout,.price-layout{grid-template-columns:1fr}.inner-hero{padding:62px 0}.profile-panel{margin:10px 0 0;max-width:none}.section{padding:62px 0}.section-head{display:block}.section-head p{margin-top:10px}.benefit-grid{grid-template-columns:1fr}.benefit-card:nth-child(2){transform:none}.metrics{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.cta-inner{display:block}.cta .btn{margin-top:24px}}
    @media(max-width:520px){h1{font-size:39px;letter-spacing:-1px}.hero-copy{font-size:16px}.hero-actions .btn{width:100%}.steps,.faq-grid{grid-template-columns:1fr}.metrics{grid-template-columns:1fr 1fr}.profile-data strong{font-size:21px}.footer-grid{grid-template-columns:1fr}.copyright{font-size:11px}}

/* roulang page: category5 */
:root{--ink:#15213a;--muted:#68738b;--paper:#f5f7fb;--white:#fff;--navy:#101a35;--cyan:#35d7d2;--violet:#745cff;--orange:#ffad62;--line:#e4e8f1;--radius:22px;--shadow:0 18px 55px rgba(25,39,78,.1);--soft:0 8px 24px rgba(25,39,78,.07);--container:1200px}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.8}a{color:inherit;text-decoration:none;transition:.25s ease}img{display:block;max-width:100%;height:auto}button,input{font:inherit}.container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,232,241,.85)}.nav-shell{height:82px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}.nav-group{display:flex;align-items:center;gap:20px}.nav-group.right{justify-content:flex-end}.nav-link{font-size:14px;color:#62708a;padding:8px 0;position:relative;white-space:nowrap}.nav-link:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--violet);transition:.25s}.nav-link:hover,.nav-link.active{color:var(--ink)}.nav-link:hover:after,.nav-link.active:after{right:0}.brand{font-size:22px;font-weight:800;letter-spacing:1px;color:var(--navy);white-space:nowrap}.brand span{color:var(--violet)}.nav-cta{background:var(--navy);color:#fff!important;border-radius:99px;padding:10px 18px!important}.nav-cta:hover{background:var(--violet);transform:translateY(-2px)}.menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:25px}
    .inner-hero{padding:92px 0 78px;background:linear-gradient(100deg,rgba(12,21,49,.95),rgba(16,27,63,.7)),url("/assets/images/backpic/back-2.webp") center/cover;color:#fff}.hero-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}.eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(53,215,210,.5);border-radius:99px;padding:6px 14px;color:var(--cyan);font-size:13px;letter-spacing:1px}.inner-hero h1{font-size:clamp(38px,5vw,66px);line-height:1.2;margin:22px 0 20px}.inner-hero p{max-width:650px;color:#d6dced;font-size:18px}.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}.btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 23px;border-radius:12px;border:1px solid transparent;font-weight:700;cursor:pointer}.btn-primary{background:var(--cyan);color:#0d2034;box-shadow:0 10px 25px rgba(53,215,210,.2)}.btn-primary:hover{background:#70e9dd;transform:translateY(-2px)}.btn-light{background:#fff;color:var(--navy)}.btn-light:hover{background:var(--orange)}.btn-outline{border-color:#ccd4e8;color:var(--ink);background:transparent}.btn-outline:hover{border-color:var(--violet);color:var(--violet)}.panel{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:var(--radius);padding:28px;box-shadow:0 20px 60px rgba(0,0,0,.18)}.panel h3{margin:0 0 18px}.step-mini{display:flex;gap:15px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.14)}.step-mini:last-child{border:0}.step-num{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--cyan);color:var(--navy);font-weight:800;flex:none}
    .section{padding:82px 0}.section.alt{background:#fff}.section.dark{background:var(--navy);color:#fff}.section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:34px}.section-head h2{font-size:clamp(28px,3vw,42px);line-height:1.3;margin:0 0 8px}.section-head p{max-width:680px;color:var(--muted);margin:0}.dark .section-head p{color:#aab6d0}.lead{font-size:18px;color:var(--muted);max-width:850px}.feature-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:stretch}.image-card,.content-card,.info-card,.faq-item,.quote-card,.timeline,.action-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--soft)}.image-card{overflow:hidden}.image-card img{width:100%;height:100%;min-height:330px;object-fit:cover}.content-card{padding:32px}.content-card h3{font-size:25px;margin:0 0 13px}.content-card p,.info-card p,.quote-card p{color:var(--muted)}.check-list{list-style:none;margin:23px 0;padding:0}.check-list li{padding:9px 0;border-bottom:1px solid var(--line)}.check-list li:before{content:"✓";color:var(--violet);font-weight:bold;margin-right:12px}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.info-card{padding:26px;min-height:220px}.info-card:nth-child(2){transform:translateY(20px)}.info-card:nth-child(3){background:#f0fffd}.icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:#eeeaff;color:var(--violet);font-weight:800;font-size:20px;margin-bottom:18px}.info-card h3{margin:0 0 8px;font-size:20px}.number-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.number-box{padding:24px;background:#fff;border:1px solid var(--line);border-radius:18px}.number-box b{display:block;font-size:35px;color:var(--violet);line-height:1.2}.number-box span{color:var(--muted);font-size:14px}.timeline{padding:12px 30px}.timeline-row{display:grid;grid-template-columns:90px 1fr;gap:25px;padding:24px 0;border-bottom:1px solid var(--line)}.timeline-row:last-child{border:0}.timeline-row strong{color:var(--violet)}.timeline-row h3{margin:0 0 5px;font-size:19px}.timeline-row p{margin:0;color:var(--muted)}.split{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:center}.split-copy{padding:15px 10px}.split-copy h2{font-size:38px;line-height:1.35;margin:0 0 15px}.split-copy p{color:var(--muted)}.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.quote-card{padding:28px}.quote-card strong{display:block;margin-top:18px;color:var(--ink)}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.faq-item{padding:21px 24px}.faq-item summary{cursor:pointer;font-weight:700;list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"＋";float:right;color:var(--violet)}.faq-item[open] summary:after{content:"－"}.faq-item p{color:var(--muted);margin:14px 0 0}.cta{padding:68px 0;background:linear-gradient(110deg,var(--violet),#4c91d9);color:#fff}.cta-box{display:flex;justify-content:space-between;align-items:center;gap:30px}.cta h2{font-size:35px;line-height:1.35;margin:0 0 8px}.cta p{margin:0;color:#e7e9ff}.site-footer{padding:55px 0 25px;background:var(--navy);color:#fff}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:30px}.footer-brand{font-size:23px;font-weight:800}.footer-brand span{color:var(--cyan)}.site-footer p{color:#aab6d0}.site-footer h4{margin:0 0 14px;font-size:16px}.footer-links{list-style:none;padding:0;margin:0}.footer-links li{margin:7px 0;color:#aab6d0;font-size:14px}.footer-links a:hover{color:var(--cyan)}.copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:38px;padding-top:20px;color:#8794b1;font-size:13px;line-height:2}.copyright a{color:#b9c4dc}.copyright a:hover{color:var(--cyan)}:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
    @media(max-width:1024px){.nav-group{gap:13px}.nav-link{font-size:13px}.hero-layout,.feature-grid,.split{grid-template-columns:1fr 1fr;gap:30px}.card-grid{grid-template-columns:repeat(2,1fr)}.number-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.nav-shell{height:70px;grid-template-columns:auto 1fr auto}.nav-shell .nav-group{display:none}.brand{justify-self:center}.menu-toggle{display:block}.inner-hero{padding:65px 0}.hero-layout,.feature-grid,.split{grid-template-columns:1fr}.inner-hero h1{font-size:43px}.section{padding:62px 0}.section-head,.cta-box{display:block}.section-head p{margin-top:12px}.card-grid,.faq-grid,.quote-grid{grid-template-columns:1fr}.info-card:nth-child(2){transform:none}.cta .btn{margin-top:24px}.footer-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:520px){.container{width:min(100% - 28px,var(--container))}.inner-hero h1{font-size:36px}.inner-hero p{font-size:16px}.number-grid{grid-template-columns:1fr 1fr;gap:10px}.number-box{padding:17px}.number-box b{font-size:27px}.timeline{padding:8px 20px}.timeline-row{grid-template-columns:65px 1fr;gap:12px}.footer-grid{grid-template-columns:1fr 1fr;gap:22px}.footer-grid>div:first-child{grid-column:1/-1}}

/* roulang page: category1 */
:root{
      --ink:#15213a;--muted:#68738b;--paper:#f5f7fb;--white:#fff;--navy:#101a35;
      --cyan:#35d7d2;--violet:#745cff;--orange:#ffad62;--line:#e4e8f1;
      --radius:22px;--shadow:0 18px 55px rgba(25,39,78,.10);
      --soft:0 8px 24px rgba(25,39,78,.07);--container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.8;font-size:16px}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button:focus,a:focus,summary:focus{outline:3px solid rgba(53,215,210,.5);outline-offset:4px}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.93);backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,232,241,.85)}
    .nav-shell{height:82px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}
    .nav-group{display:flex;align-items:center;gap:24px}
    .nav-group.right{justify-content:flex-end}
    .nav-link{font-size:14px;color:#62708a;padding:8px 0;position:relative;white-space:nowrap}
    .nav-link:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--violet);transition:.25s}
    .nav-link:hover,.nav-link.active{color:var(--ink)}
    .nav-link:hover:after,.nav-link.active:after{right:0}
    .brand{font-size:22px;font-weight:800;letter-spacing:1px;color:var(--navy);white-space:nowrap}
    .brand span{color:var(--violet)}
    .nav-cta{background:var(--navy);color:#fff!important;border-radius:99px;padding:10px 18px!important}
    .nav-cta:hover{background:var(--violet);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:25px}
    .hero{padding:80px 0 76px;background:linear-gradient(100deg,rgba(12,21,49,.96),rgba(16,27,63,.82)),url("/assets/images/backpic/back-2.webp") center/cover;color:#fff;position:relative;overflow:hidden}
    .hero:after{content:"";position:absolute;width:520px;height:520px;border:1px solid rgba(53,215,210,.22);border-radius:50%;right:-160px;top:-170px;box-shadow:0 0 0 34px rgba(53,215,210,.04),0 0 0 70px rgba(53,215,210,.025)}
    .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center;position:relative;z-index:1}
    .eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(53,215,210,.45);border-radius:99px;padding:6px 13px;color:var(--cyan);font-size:13px;letter-spacing:1px}
    h1{font-size:clamp(38px,5vw,68px);line-height:1.18;margin:20px 0 22px;letter-spacing:-2px}
    .hero-copy{font-size:18px;line-height:2;color:#d6dced;max-width:650px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:32px 0}
    .btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 23px;border-radius:12px;border:1px solid transparent;font-weight:700;cursor:pointer}
    .btn-primary{background:var(--cyan);color:#0d2034;box-shadow:0 10px 25px rgba(53,215,210,.2)}
    .btn-primary:hover{background:#70e9dd;transform:translateY(-2px)}
    .btn-light{background:#fff;color:var(--navy)}
    .btn-light:hover{background:var(--orange);color:var(--navy)}
    .btn-outline{border-color:#ccd4e8;color:var(--ink);background:transparent}
    .btn-outline:hover{border-color:var(--violet);color:var(--violet)}
    .hero-panel{background:rgba(8,16,40,.76);border:1px solid rgba(255,255,255,.15);border-radius:26px;padding:26px;box-shadow:0 20px 60px rgba(0,0,0,.22)}
    .panel-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(255,255,255,.13);padding-bottom:18px}
    .panel-top strong{font-size:18px}.live-dot{color:var(--cyan);font-size:13px}
    .rank-row{display:grid;grid-template-columns:32px 1fr auto;gap:12px;align-items:center;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.1)}
    .rank-row:last-child{border-bottom:0}
    .rank-no{color:var(--orange);font-size:20px;font-weight:800}
    .rank-name{color:#edf2ff}.rank-desc{display:block;color:#9daac4;font-size:12px}
    .rank-value{color:var(--cyan);font-size:13px}
    .section{padding:82px 0}.section.alt{background:#fff}.section.dark{background:var(--navy);color:#fff}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:34px}
    .section-head h2{font-size:clamp(28px,3vw,42px);line-height:1.3;margin:0 0 9px}
    .section-head p{max-width:680px;color:var(--muted);margin:0}
    .dark .section-head p{color:#aab6d0}
    .intro-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:38px;align-items:stretch}
    .intro-copy,.highlight-box,.theme-card,.scene-box,.step-box,.story-box,.faq-item,.cta-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--soft)}
    .intro-copy{padding:34px 38px;font-size:17px}.intro-copy p{margin-top:0}.intro-copy p:last-child{margin-bottom:0}
    .highlight-box{padding:32px;background:#edfafa;border-color:#d4f1ee}
    .highlight-box h3{margin-top:0;font-size:23px}.highlight-box ul,.check-list{list-style:none;padding:0;margin:18px 0 0}
    .highlight-box li,.check-list li{margin:13px 0}.highlight-box li:before,.check-list li:before{content:"✓";color:var(--violet);font-weight:bold;margin-right:11px}
    .theme-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .theme-card{overflow:hidden}.theme-card:hover,.scene-box:hover,.step-box:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .theme-card img{width:100%;height:148px;object-fit:cover}.theme-card .inner{padding:21px}.theme-card small{color:var(--violet);font-weight:700}.theme-card h3{font-size:20px;margin:5px 0 8px}.theme-card p{color:var(--muted);font-size:14px;margin:0}
    .scene-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:22px}.scene-box{padding:29px}.scene-box.feature{background:var(--navy);color:#fff;border-color:var(--navy);min-height:300px}.scene-box.feature p{color:#b8c3da}.scene-box h3{font-size:23px;margin:4px 0 9px}.scene-box p{color:var(--muted);margin:0}
    .scene-list{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}.step-box{padding:25px;transition:.25s}.step-num{font-size:31px;font-weight:800;color:var(--violet);line-height:1}.step-box h3{font-size:18px;margin:16px 0 7px}.step-box p{font-size:14px;color:var(--muted);margin:0}
    .evidence{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}.story-box{overflow:hidden}.story-box img{width:100%;height:100%;min-height:330px;object-fit:cover}.story-content{padding:34px}.story-content h2{font-size:31px;line-height:1.35;margin:0 0 15px}.story-content p{color:var(--muted)}
    .metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:24px}.metric{padding:22px;border:1px solid var(--line);border-radius:16px;background:#fbfcff}.metric b{display:block;color:var(--violet);font-size:29px}.metric span{color:var(--muted);font-size:13px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.faq-item{padding:22px 25px}.faq-item summary{cursor:pointer;font-weight:700;list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"＋";float:right;color:var(--violet)}.faq-item[open] summary:after{content:"－"}.faq-item p{color:var(--muted);margin:14px 0 0;font-size:14px}
    .cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:38px 44px;background:linear-gradient(115deg,#f0fffd,#f4f1ff);border-color:#dce5f3}.cta-box h2{margin:0 0 8px;font-size:31px}.cta-box p{margin:0;color:var(--muted)}
    .site-footer{background:#0c1530;color:#c4cce0;padding:56px 0 24px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px}.footer-brand{font-size:25px;font-weight:800;color:#fff}.footer-brand span{color:var(--cyan)}.site-footer p{color:#8996b2;font-size:14px}.site-footer h4{color:#fff;margin:0 0 15px;font-size:15px}.footer-links{list-style:none;padding:0;margin:0}.footer-links li{margin:7px 0}.footer-links a{font-size:14px;color:#9da9c1}.footer-links a:hover{color:var(--cyan)}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding-top:20px;color:#8491ad;font-size:13px;line-height:2}.copyright a{color:#aeb9ce}.copyright a:hover{color:var(--cyan)}
    @media(max-width:1024px){.hero-grid{gap:35px}.theme-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.4fr repeat(3,1fr)}}
    @media(max-width:768px){.nav-shell{height:70px;display:flex;justify-content:space-between}.menu-toggle{display:block}.nav-group{display:none}.brand{order:-1}.nav-group.mobile-open{display:flex;position:absolute;top:70px;left:0;right:0;padding:20px;background:#fff;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start;gap:12px}.hero{padding:64px 0}.hero-grid,.intro-layout,.evidence,.scene-layout{grid-template-columns:1fr}.hero-panel{margin-top:12px}.section{padding:64px 0}.section-head{display:block}.section-head p{margin-top:14px}.step-grid{grid-template-columns:repeat(2,1fr)}.scene-list{grid-template-columns:1fr}.faq-grid{grid-template-columns:1fr}.cta-box{display:block;padding:30px}.cta-box .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:520px){.container{width:min(100% - 28px,var(--container))}h1{font-size:39px}.hero-copy{font-size:16px}.theme-grid,.step-grid,.metric-grid{grid-template-columns:1fr}.intro-copy,.highlight-box,.story-content{padding:25px}.footer-grid{grid-template-columns:1fr 1fr;gap:24px}.footer-grid>div:first-child{grid-column:1/-1}.nav-cta{padding:9px 13px!important}.hero-actions .btn{width:100%}}

/* roulang page: category6 */
:root{
      --ink:#15213a;--muted:#68738b;--paper:#f5f7fb;--white:#fff;--navy:#101a35;
      --cyan:#35d7d2;--violet:#745cff;--orange:#ffad62;--line:#e4e8f1;
      --radius:22px;--shadow:0 18px 55px rgba(25,39,78,.10);--soft:0 8px 24px rgba(25,39,78,.07);
      --container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.8;font-size:16px}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,232,241,.85)}
    .nav-shell{height:82px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}
    .nav-group{display:flex;align-items:center;gap:20px}
    .nav-group.right{justify-content:flex-end}
    .nav-link{font-size:13px;color:#62708a;padding:8px 0;position:relative;white-space:nowrap}
    .nav-link:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--violet);transition:.25s}
    .nav-link:hover,.nav-link.active{color:var(--ink)}
    .nav-link:hover:after,.nav-link.active:after{right:0}
    .brand{font-size:22px;font-weight:800;letter-spacing:1px;color:var(--navy);white-space:nowrap}
    .brand span{color:var(--violet)}
    .nav-cta{background:var(--navy);color:#fff!important;border-radius:99px;padding:10px 17px!important}
    .nav-cta:hover{background:var(--violet);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:25px}
    .page-hero{padding:74px 0 62px;background:linear-gradient(105deg,rgba(13,25,53,.95),rgba(29,34,81,.72)),url("/assets/images/backpic/back-2.webp") center/cover;color:#fff;position:relative;overflow:hidden}
    .page-hero:after{content:"";position:absolute;width:370px;height:370px;border:1px solid rgba(53,215,210,.35);border-radius:50%;right:8%;top:35px;box-shadow:0 0 0 28px rgba(53,215,210,.05),0 0 0 58px rgba(53,215,210,.025)}
    .hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;position:relative;z-index:1}
    .eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(53,215,210,.45);border-radius:99px;padding:5px 13px;color:var(--cyan);font-size:13px;letter-spacing:1px}
    h1{font-size:clamp(38px,5vw,66px);line-height:1.18;margin:18px 0 18px;letter-spacing:-1px}
    .hero-copy{font-size:18px;line-height:2;color:#d6dced;max-width:650px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
    .btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 23px;border-radius:12px;border:1px solid transparent;font-weight:700;cursor:pointer}
    .btn-primary{background:var(--cyan);color:#0d2034;box-shadow:0 10px 25px rgba(53,215,210,.2)}
    .btn-primary:hover{background:#70e9dd;transform:translateY(-2px)}
    .btn-light{background:#fff;color:var(--navy)}
    .btn-light:hover{background:var(--orange)}
    .btn-outline{border-color:#ccd4e8;color:var(--ink);background:transparent}
    .btn-outline:hover{border-color:var(--violet);color:var(--violet)}
    .hero-panel{background:rgba(9,17,43,.72);border:1px solid rgba(255,255,255,.16);border-radius:24px;padding:27px;box-shadow:0 25px 65px rgba(0,0,0,.2)}
    .hero-panel h3{margin:0 0 18px;font-size:20px}
    .signal-list{list-style:none;margin:0;padding:0}
    .signal-list li{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.14);color:#e0e6f3}
    .signal-list li:last-child{border-bottom:0}
    .signal-list li:before{content:"✦";color:var(--orange);margin-right:10px}
    .section{padding:76px 0}
    .section.alt{background:#fff}
    .section.dark{background:var(--navy);color:#fff}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:32px}
    .section-head h2{font-size:clamp(28px,3vw,42px);line-height:1.3;margin:0 0 8px}
    .section-head p{max-width:690px;color:var(--muted);margin:0}
    .dark .section-head p{color:#aab6d0}
    .lead{font-size:18px;color:var(--muted);max-width:840px}
    .security-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:26px;align-items:stretch}
    .security-card,.promise-box,.faq-item,.action-panel,.quote-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--soft)}
    .security-card{padding:28px}
    .security-card h3{font-size:21px;margin:0 0 9px}
    .security-card p{color:var(--muted);font-size:14px;margin:0}
    .security-card .icon{width:44px;height:44px;border-radius:14px;background:#effaf7;color:#159d91;display:grid;place-items:center;font-size:21px;margin-bottom:18px}
    .protection-list{display:grid;grid-template-columns:repeat(2,1fr);gap:17px}
    .promise-box{padding:30px;background:linear-gradient(145deg,#f0fcfa,#fff)}
    .promise-box h3{margin:0 0 12px;font-size:25px}
    .promise-box p{color:var(--muted)}
    .check-list{list-style:none;padding:0;margin:20px 0 0}
    .check-list li{margin:12px 0;color:var(--ink)}
    .check-list li:before{content:"✓";color:var(--violet);font-weight:bold;margin-right:12px}
    .image-story{display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:center}
    .story-image{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
    .story-image img{width:100%;height:390px;object-fit:cover}
    .story-copy h2{font-size:36px;line-height:1.3;margin:0 0 16px}
    .story-copy p{color:var(--muted)}
    .data-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.14);border-radius:20px;overflow:hidden}
    .data-item{padding:25px;background:rgba(255,255,255,.04)}
    .data-item strong{display:block;font-size:30px;color:var(--cyan);line-height:1.2}
    .data-item span{display:block;color:#b7c3dc;font-size:14px;margin-top:8px}
    .flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .flow-item{position:relative;padding:24px;background:#fff;border:1px solid var(--line);border-radius:18px}
    .flow-item b{display:inline-grid;place-items:center;width:31px;height:31px;background:var(--violet);color:#fff;border-radius:50%;font-size:14px;margin-bottom:15px}
    .flow-item h3{font-size:18px;margin:0 0 8px}
    .flow-item p{font-size:14px;color:var(--muted);margin:0}
    .review-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px;align-items:stretch}
    .quote-box{padding:32px;background:var(--navy);color:#fff;border-color:var(--navy)}
    .quote-box p{font-size:21px;line-height:1.8;margin:0 0 20px}
    .quote-box span{font-size:13px;color:#aeb9d1}
    .review-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .review{padding:23px;background:#fff;border:1px solid var(--line);border-radius:18px}
    .review p{color:var(--muted);font-size:14px;margin:8px 0 0}
    .review strong{font-size:16px}
    .review small{display:block;color:var(--violet);margin-top:10px}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    .faq-item{padding:21px 24px}
    .faq-item summary{cursor:pointer;font-weight:700;list-style:none;padding-right:20px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";float:right;color:var(--violet);font-size:20px}
    .faq-item[open] summary:after{content:"－"}
    .faq-item p{color:var(--muted);font-size:14px;margin:12px 0 0}
    .action-panel{display:flex;justify-content:space-between;align-items:center;gap:30px;padding:32px 38px;background:linear-gradient(110deg,#eefcf9,#f3f0ff)}
    .action-panel h2{font-size:30px;margin:0 0 8px}
    .action-panel p{margin:0;color:var(--muted)}
    .site-footer{background:#0d1730;color:#c2cbe0;padding:56px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:30px}
    .footer-brand{font-size:23px;color:#fff;font-weight:800;margin-bottom:12px}
    .footer-brand span{color:var(--cyan)}
    .footer-grid p{font-size:14px;color:#9daac4;max-width:240px}
    .footer-grid h4{color:#fff;font-size:15px;margin:0 0 14px}
    .footer-links{list-style:none;margin:0;padding:0}
    .footer-links li{margin:7px 0;font-size:13px}
    .footer-links a:hover{color:var(--cyan)}
    .copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:20px;font-size:12px;color:#8e9bb6;line-height:2}
    .copyright a{color:#aebbd3}
    :focus-visible{outline:3px solid rgba(53,215,210,.65);outline-offset:3px}
    @media(max-width:1024px){
      .nav-group{gap:12px}.nav-link{font-size:12px}
      .hero-inner,.security-grid,.image-story,.review-layout{grid-template-columns:1fr}
      .hero-panel{max-width:600px}
      .data-strip{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 28px))}
      .nav-shell{height:68px;display:flex;justify-content:space-between}
      .nav-group{display:none}.menu-toggle{display:block}
      .brand{font-size:20px}
      .site-header.menu-open .nav-shell{height:auto;padding:15px 0;display:block}
      .site-header.menu-open .brand{display:inline-block;margin-bottom:10px}
      .site-header.menu-open .nav-group{display:flex;flex-wrap:wrap;gap:5px 17px}
      .site-header.menu-open .nav-group.right{justify-content:flex-start}
      .site-header.menu-open .menu-toggle{position:absolute;right:14px;top:14px}
      .page-hero{padding:58px 0 48px}
      .section{padding:57px 0}
      .protection-list,.faq-grid,.review-list{grid-template-columns:1fr}
      .flow{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
      .action-panel{display:block;padding:28px}
      .action-panel .btn{margin-top:20px}
    }
    @media(max-width:520px){
      h1{font-size:39px}.hero-copy{font-size:16px}
      .section-head{display:block}.section-head h2{font-size:30px}
      .data-strip{grid-template-columns:1fr 1fr}
      .data-item strong{font-size:24px}
      .flow{grid-template-columns:1fr}
      .story-image img{height:270px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:22px}
      .footer-grid>div:first-child{grid-column:1/-1}
    }

/* roulang page: category2 */
:root{
      --ink:#15213a;--muted:#68738b;--paper:#f5f7fb;--white:#fff;--navy:#101a35;
      --cyan:#35d7d2;--violet:#745cff;--orange:#ffad62;--line:#e4e8f1;
      --radius:22px;--shadow:0 18px 55px rgba(25,39,78,.10);--soft:0 8px 24px rgba(25,39,78,.07);
      --container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.8;font-size:16px}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.93);backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,232,241,.88)}
    .nav-shell{height:82px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}
    .nav-group{display:flex;align-items:center;gap:24px}
    .nav-group.right{justify-content:flex-end}
    .nav-link{font-size:14px;color:#62708a;padding:8px 0;position:relative;white-space:nowrap}
    .nav-link:after{content:"";position:absolute;left:0;right:100%;bottom:1px;height:2px;background:var(--violet);transition:.25s}
    .nav-link:hover,.nav-link.active{color:var(--ink)}
    .nav-link:hover:after,.nav-link.active:after{right:0}
    .brand{font-size:22px;font-weight:800;letter-spacing:1px;color:var(--navy);white-space:nowrap}
    .brand span{color:var(--violet)}
    .nav-cta{background:var(--navy);color:#fff!important;border-radius:99px;padding:10px 18px!important}
    .nav-cta:hover{background:var(--violet);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:25px}
    .hero{padding:74px 0 78px;background:linear-gradient(105deg,rgba(12,21,49,.95),rgba(16,27,63,.77)),url("/assets/images/backpic/back-2.webp") center/cover;color:#fff;position:relative;overflow:hidden}
    .hero:after{content:"";position:absolute;width:500px;height:500px;border:1px solid rgba(53,215,210,.22);border-radius:50%;right:-120px;top:-150px;box-shadow:0 0 0 36px rgba(53,215,210,.04),0 0 0 74px rgba(53,215,210,.025)}
    .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center;position:relative;z-index:1}
    .eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(53,215,210,.48);border-radius:99px;padding:6px 13px;color:var(--cyan);font-size:13px;letter-spacing:1px}
    h1{font-size:clamp(38px,5vw,68px);line-height:1.2;margin:20px 0 18px;letter-spacing:-2px}
    .hero-copy{font-size:18px;line-height:2;color:#d6dced;max-width:650px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 0}
    .btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 23px;border-radius:12px;border:1px solid transparent;font-weight:700;cursor:pointer}
    .btn-primary{background:var(--cyan);color:#0d2034;box-shadow:0 10px 25px rgba(53,215,210,.2)}
    .btn-primary:hover{background:#70e9dd;transform:translateY(-2px)}
    .btn-light{background:#fff;color:var(--navy)}
    .btn-light:hover{background:var(--orange);color:var(--navy)}
    .btn-outline{border-color:#ccd4e8;color:var(--ink);background:transparent}
    .btn-outline:hover{border-color:var(--violet);color:var(--violet)}
    .flash-card{background:#fff;color:var(--ink);border-radius:26px;padding:27px;box-shadow:var(--shadow);position:relative}
    .flash-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
    .flash-top strong{color:#e56e37;font-size:14px}
    .product{display:grid;grid-template-columns:120px 1fr;gap:20px;align-items:center}
    .product img{height:120px;width:120px;object-fit:cover;border-radius:18px}
    .product h2{font-size:23px;line-height:1.35;margin:0 0 7px}
    .product p{font-size:14px;color:var(--muted);margin:0 0 14px}
    .price{font-size:27px;color:var(--violet);font-weight:800}
    .price del{font-size:13px;color:#9aa4b7;font-weight:400;margin-left:9px}
    .countdown{display:flex;gap:8px;margin-top:21px;padding-top:18px;border-top:1px solid var(--line)}
    .time-box{flex:1;background:#f2f4fb;border-radius:12px;text-align:center;padding:7px}
    .time-box b{display:block;color:var(--navy);font-size:21px;line-height:1.3}
    .time-box small{font-size:11px;color:var(--muted)}
    .section{padding:78px 0}
    .section.alt{background:#fff}
    .section.dark{background:var(--navy);color:#fff}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:30px}
    .section-head h2{font-size:clamp(28px,3vw,42px);line-height:1.3;margin:0 0 8px}
    .section-head p{max-width:680px;color:var(--muted);margin:0}
    .dark .section-head p{color:#aab6d0}
    .kicker{color:var(--violet);font-size:13px;font-weight:800;letter-spacing:1px;text-transform:uppercase}
    .benefit-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:25px;align-items:stretch}
    .benefit-main,.benefit-side,.tier-card,.step-card,.scene-box,.story-box,.faq-item,.cta-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--soft)}
    .benefit-main{padding:32px;display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .benefit-item{padding:20px;border-radius:16px;background:#f7f8fc}
    .icon{width:42px;height:42px;display:grid;place-items:center;background:#e9fbf8;border-radius:13px;color:#149c96;font-size:21px;margin-bottom:12px}
    .benefit-item h3{font-size:18px;margin:0 0 5px}
    .benefit-item p{font-size:14px;color:var(--muted);margin:0}
    .benefit-side{overflow:hidden}
    .benefit-side img{width:100%;height:215px;object-fit:cover}
    .benefit-side .inner{padding:23px}
    .benefit-side h3{font-size:22px;margin:0 0 8px}
    .benefit-side p{color:var(--muted);font-size:14px}
    .tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .tier-card{padding:26px;position:relative}
    .tier-card.featured{background:var(--navy);color:#fff;border-color:var(--navy);transform:translateY(-12px)}
    .tier-card h3{font-size:23px;margin:12px 0 4px}
    .tier-card p{color:var(--muted);font-size:14px}
    .featured p{color:#bdc7da}
    .tier-mark{font-size:12px;color:var(--violet);font-weight:700}
    .featured .tier-mark{color:var(--cyan)}
    .check-list{list-style:none;padding:0;margin:20px 0 0}
    .check-list li{margin:10px 0;font-size:14px}
    .check-list li:before{content:"✓";color:var(--violet);font-weight:bold;margin-right:10px}
    .featured .check-list li:before{color:var(--cyan)}
    .scene-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:24px}
    .scene-box{padding:30px}
    .scene-box h3{font-size:26px;line-height:1.4;margin:0 0 12px}
    .scene-box p{color:var(--muted)}
    .scene-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .scene-list article{background:#f7f8fc;border-radius:16px;padding:20px}
    .scene-list h4{margin:0 0 5px;font-size:17px}
    .scene-list p{font-size:14px;margin:0;color:var(--muted)}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step-card{padding:24px;background:#fbfcff}
    .step-number{font-size:35px;font-weight:800;color:var(--violet);line-height:1}
    .step-card h3{font-size:18px;margin:17px 0 6px}
    .step-card p{font-size:14px;color:var(--muted);margin:0}
    .story-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:26px;align-items:stretch}
    .story-box{overflow:hidden}
    .story-box img{width:100%;height:100%;min-height:310px;object-fit:cover}
    .story-copy{padding:36px}
    .story-copy h2{font-size:32px;line-height:1.4;margin:10px 0 13px}
    .story-copy p{color:var(--muted)}
    .quote{border-left:3px solid var(--cyan);padding-left:17px;margin-top:24px;color:var(--ink);font-weight:600}
    .numbers{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
    .number-box{padding:24px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.13);border-radius:18px}
    .number-box b{font-size:34px;color:var(--cyan);display:block}
    .number-box span{font-size:14px;color:#b9c4d9}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    .faq-item{padding:21px 24px}
    .faq-item summary{cursor:pointer;font-weight:700;list-style:none;position:relative;padding-right:25px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";position:absolute;right:0;color:var(--violet);font-size:21px;line-height:1}
    .faq-item[open] summary:after{content:"－"}
    .faq-item p{color:var(--muted);font-size:14px;margin:13px 0 0}
    .cta-box{padding:43px 48px;background:linear-gradient(110deg,#eefcf9,#f1efff);display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta-box h2{font-size:32px;line-height:1.4;margin:0 0 8px}
    .cta-box p{color:var(--muted);margin:0}
    .site-footer{background:#0c152d;color:#d8dfed;padding:58px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{font-size:23px;font-weight:800;color:#fff}
    .footer-brand span{color:var(--cyan)}
    .site-footer p{color:#98a6c0;font-size:14px;max-width:260px}
    .site-footer h4{color:#fff;font-size:15px;margin:0 0 13px}
    .footer-links{list-style:none;padding:0;margin:0}
    .footer-links li{margin:7px 0}
    .footer-links a{font-size:14px;color:#9daac1}
    .footer-links a:hover{color:var(--cyan)}
    .copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:20px;color:#8c9ab4;font-size:13px;line-height:2}
    .copyright a{color:#aab7ca}.copyright a:hover{color:var(--cyan)}
    :focus-visible{outline:3px solid rgba(53,215,210,.65);outline-offset:3px}
    @media(max-width:1024px){.hero-grid{gap:35px}.nav-group{gap:14px}.steps{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .nav-shell{height:70px;display:flex;justify-content:space-between}.menu-toggle{display:block}.nav-group{display:none}.nav-shell.open .nav-group{display:flex;position:absolute;top:70px;left:0;right:0;background:#fff;padding:18px 20px;flex-direction:column;align-items:flex-start;border-bottom:1px solid var(--line);box-shadow:var(--soft)}.nav-shell.open .nav-group.right{justify-content:flex-start}.nav-shell.open{position:relative}
      .hero{padding:57px 0}.hero-grid,.benefit-layout,.scene-grid,.story-grid{grid-template-columns:1fr}.hero-copy{font-size:16px}.flash-card{max-width:560px}.section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:10px}.tier-grid{grid-template-columns:1fr}.tier-card.featured{transform:none}.numbers{grid-template-columns:repeat(2,1fr)}.faq-grid{grid-template-columns:1fr}.cta-box{display:block;padding:32px 25px}.cta-box .btn{margin-top:21px}.footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:520px){
      h1{font-size:39px}.product{grid-template-columns:1fr}.product img{width:100%;height:170px}.benefit-main{grid-template-columns:1fr;padding:20px}.scene-list{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.numbers{gap:10px}.number-box{padding:17px}.number-box b{font-size:27px}.footer-grid{grid-template-columns:1fr 1fr;gap:22px}.copyright{font-size:12px}
    }