/* roulang page: index */
:root{
  --ink:#241b2d;
  --ink-2:#3b2c49;
  --coral:#ef7657;
  --coral-dark:#d85e43;
  --lime:#b9d866;
  --cream:#fbf7f0;
  --paper:#fffdfa;
  --peach:#fff0e7;
  --muted:#766c7b;
  --line:#e8ded5;
  --shadow:0 16px 42px rgba(47,31,51,.09);
  --shadow-sm:0 8px 20px rgba(47,31,51,.07);
  --radius:18px;
  --container:1220px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--cream);line-height:1.75;font-size:15px}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input{font:inherit}
button{cursor:pointer;border:0}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.site-header{background:var(--ink);color:#fff;position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(255,255,255,.1)}
.navbar{min-height:78px;display:flex;align-items:center;gap:34px}
.brand{display:flex;align-items:center;gap:12px;min-width:max-content}
.brand-mark{width:38px;height:38px;border-radius:11px;background:var(--coral);display:grid;place-items:center;font-weight:900;font-size:19px;color:#fff}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.02em}
.brand-text small{display:block;color:#d9cedd;font-size:10px;line-height:1.1;font-weight:500;letter-spacing:.12em}
.nav-links{display:flex;align-items:center;gap:7px;margin-left:auto}
.nav-links a{padding:9px 13px;border-radius:9px;color:#d9cedd;font-size:14px;transition:.2s ease}
.nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.1)}
.nav-links a.active{box-shadow:inset 0 -2px var(--coral)}
.nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;padding:12px 19px;font-weight:750;transition:.2s ease}
.nav-cta{background:var(--coral);color:#fff;white-space:nowrap}
.nav-cta:hover,.button.primary:hover{background:var(--coral-dark);transform:translateY(-2px)}
.menu-toggle{display:none;background:none;color:#fff;font-size:25px}
.notice-bar{background:#382a43;color:#e6dce8;font-size:13px}
.notice-inner{min-height:36px;display:flex;align-items:center;justify-content:center;gap:10px}
.notice-dot{width:7px;height:7px;border-radius:50%;background:var(--lime)}
.hero{background:var(--ink);color:#fff;padding:78px 0 92px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;width:480px;height:480px;border:1px solid rgba(239,118,87,.35);border-radius:50%;right:-140px;top:-190px;box-shadow:0 0 0 38px rgba(239,118,87,.06),0 0 0 78px rgba(239,118,87,.04)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center;position:relative;z-index:1}
.eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;border-radius:999px;font-size:12px;font-weight:800;letter-spacing:.04em}
.eyebrow{color:#ffd4c8;background:rgba(239,118,87,.16);padding:7px 12px}
.eyebrow:before{content:"";width:7px;height:7px;background:var(--coral);border-radius:50%}
.hero h1{font-size:clamp(36px,5vw,66px);line-height:1.14;letter-spacing:-.04em;margin:22px 0 22px;max-width:720px}
.hero h1 em{font-style:normal;color:#ff9b7f}
.hero-copy{color:#d6cad9;max-width:600px;font-size:17px}
.hero-actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}
.button{border:1px solid transparent}
.button.primary{background:var(--coral);color:#fff}
.button.light{background:#fff;color:var(--ink)}
.button.outline{border-color:var(--line);color:var(--ink)}
.button.outline:hover{border-color:var(--coral);color:var(--coral)}
.hero-visual{min-height:340px;background:#30243a;border:1px solid rgba(255,255,255,.13);border-radius:28px;padding:22px;position:relative;box-shadow:0 24px 60px rgba(0,0,0,.22)}
.visual-top{display:flex;justify-content:space-between;color:#b9adbf;font-size:12px}
.visual-screen{height:245px;margin-top:20px;border-radius:18px;background:var(--peach);color:var(--ink);padding:24px;position:relative;overflow:hidden}
.visual-screen:after{content:"NG28";position:absolute;right:-12px;bottom:-26px;font-size:100px;font-weight:900;color:rgba(239,118,87,.12)}
.visual-screen h3{font-size:26px;line-height:1.25;max-width:230px}
.visual-line{height:9px;width:145px;background:#e6c9bc;border-radius:5px;margin:15px 0}
.visual-pills{display:flex;gap:8px;margin-top:26px}.visual-pills span{font-size:11px;padding:5px 9px;background:#fff;border-radius:7px}
.section{padding:88px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}
.section-kicker{color:var(--coral-dark);font-size:12px;font-weight:850;letter-spacing:.14em;text-transform:uppercase}
.section h2{font-size:clamp(27px,3vw,40px);line-height:1.25;margin-top:7px;letter-spacing:-.025em}
.section-intro{color:var(--muted);max-width:550px}
.text-link{color:var(--coral-dark);font-weight:750;font-size:14px;border-bottom:1px solid transparent}
.text-link:hover{border-color:var(--coral-dark)}
.signal-band{background:var(--peach);border-top:1px solid #f5d9ca;border-bottom:1px solid #f5d9ca;padding:23px 0}
.signal-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.signal{display:flex;align-items:center;gap:15px;border-right:1px solid #e9cfc4}
.signal:last-child{border:0}.signal strong{display:block;font-size:23px}.signal span{color:var(--muted);font-size:13px}
.signal-no{font-size:12px;color:var(--coral-dark);font-weight:800}
.brand-zone{display:grid;grid-template-columns:.82fr 1.18fr;gap:28px;align-items:stretch}
.brand-panel{background:var(--ink);color:#fff;border-radius:var(--radius);padding:42px;min-height:300px;position:relative;overflow:hidden}
.brand-panel:after{content:"28";position:absolute;right:24px;bottom:-42px;font-size:190px;font-weight:900;line-height:1;color:rgba(255,255,255,.06)}
.brand-panel h3{font-size:34px;position:relative;z-index:1}.brand-panel p{color:#cfc2d2;margin-top:22px;max-width:330px;position:relative;z-index:1}
.brand-info{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:35px}
.info-list{display:grid;grid-template-columns:1fr 1fr;gap:22px 28px;margin-top:27px}
.info-item{border-top:2px solid var(--coral);padding-top:11px}.info-item strong{display:block;font-size:17px}.info-item span{color:var(--muted);font-size:13px}
.news-layout{display:grid;grid-template-columns:1.18fr .82fr;gap:22px}
.news-feature,.news-card,.timeline-item,.topic-large,.topic-small,.guide-card,.security-card,.faq-item{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);transition:.22s ease}
.news-feature:hover,.news-card:hover,.topic-large:hover,.topic-small:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.news-feature{padding:30px;min-height:310px;display:flex;flex-direction:column;justify-content:end;background:linear-gradient(145deg,#fffdfa 55%,#ffe6d9)}
.tag{padding:5px 10px;background:#f9e2d7;color:var(--coral-dark);width:max-content}
.news-feature h3{font-size:29px;line-height:1.3;margin:16px 0 10px;max-width:580px}
.news-meta{color:var(--muted);font-size:12px;display:flex;gap:15px;align-items:center}
.news-list{display:flex;flex-direction:column;gap:12px}
.news-card{padding:20px 22px;display:block}.news-card h3{font-size:17px;line-height:1.45;margin:9px 0 5px}.news-card p{font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.timeline{display:grid;gap:12px;max-width:920px}
.timeline-item{display:grid;grid-template-columns:100px 100px 1fr auto;gap:20px;align-items:center;padding:18px 22px}
.timeline-item time{font-weight:800;color:var(--coral-dark);font-size:13px}.timeline-item .tag{font-size:11px}.timeline-item h3{font-size:16px}.timeline-item p{color:var(--muted);font-size:13px}.arrow{font-size:20px;color:var(--coral)}
.topic-grid{display:grid;grid-template-columns:1.25fr .75fr .75fr;grid-template-rows:1fr 1fr;gap:15px}
.topic-large{grid-row:span 2;background:var(--ink);color:#fff;padding:31px;display:flex;flex-direction:column;justify-content:end}
.topic-large h3{font-size:29px}.topic-large p,.topic-small p{font-size:13px;margin-top:7px}.topic-small{padding:24px;display:flex;flex-direction:column;justify-content:end;min-height:145px}.topic-small h3{font-size:19px}.topic-small:nth-child(2){background:#e7efc5}.topic-small:nth-child(3){background:#ffe3d5}.topic-small:nth-child(4){background:#eee7f4}.topic-small:nth-child(5){background:#f8e9c8}
.event-strip{background:var(--ink);color:#fff;border-radius:var(--radius);padding:30px;display:grid;grid-template-columns:1fr 1fr 1fr;gap:0}
.event{padding:3px 25px;border-right:1px solid rgba(255,255,255,.18)}.event:first-child{padding-left:0}.event:last-child{border:0}.event small{color:#cdbed0}.event strong{display:block;margin:7px 0;font-size:18px}.event span{font-size:13px;color:#d8cedb}.status{color:var(--lime)!important}
.app-section{background:#f3e8e1}
.app-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:center}
.app-art{min-height:365px;border-radius:30px;background:#30243a;display:grid;place-items:center;position:relative;overflow:hidden}
.app-art:before{content:"";width:215px;height:390px;border:8px solid #fff;border-radius:31px;background:var(--peach);box-shadow:25px 20px 0 rgba(239,118,87,.3);transform:rotate(-8deg)}
.app-art:after{content:"NG28";position:absolute;font-weight:900;font-size:47px;color:var(--ink);top:145px;left:calc(50% - 60px);transform:rotate(-8deg)}
.app-copy h2{margin-bottom:14px}.app-copy p{color:var(--muted)}
.app-meta{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0}.app-meta span{background:#fff;border:1px solid var(--line);padding:8px 12px;border-radius:9px;font-size:13px}
.download-box{display:flex;align-items:center;gap:18px;margin-top:24px}.qr{width:82px;height:82px;background:repeating-linear-gradient(45deg,#241b2d 0 4px,#fff 4px 8px);border:7px solid #fff;box-shadow:var(--shadow-sm)}.download-note{font-size:12px;color:var(--muted);margin-top:12px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.guide-card{padding:27px}.step-no{font-size:34px;color:var(--coral);font-weight:900;line-height:1}.guide-card h3{margin:18px 0 6px;font-size:18px}.guide-card p{color:var(--muted);font-size:13px}
.support-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.security-card{padding:28px}.security-card h3{font-size:19px;margin-bottom:18px}.check-list{list-style:none;display:grid;gap:12px}.check-list li{color:var(--muted);padding-left:25px;position:relative}.check-list li:before{content:"✓";position:absolute;left:0;color:#6e8d20;font-weight:900}
.faq{display:grid;gap:10px;max-width:850px}.faq-item{padding:0 22px}.faq-item summary{cursor:pointer;list-style:none;padding:19px 0;font-weight:750;display:flex;justify-content:space-between}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"＋";color:var(--coral);font-size:20px}.faq-item[open] summary:after{content:"－"}.faq-item p{color:var(--muted);font-size:14px;padding:0 0 20px}
.cta-section{padding:65px 0}.cta-box{background:var(--ink);color:#fff;border-radius:24px;padding:42px 48px;display:flex;align-items:center;justify-content:space-between;gap:30px}.cta-box h2{font-size:30px}.cta-box p{color:#cfc2d2;margin-top:6px}
.site-footer{background:#1c1523;color:#d9cedd;padding:55px 0 24px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px;padding-bottom:40px}.footer-brand p{color:#9e91a4;font-size:13px;max-width:270px;margin-top:15px}.footer-title{color:#fff;font-weight:750;margin-bottom:13px}.footer-links{display:grid;gap:8px;font-size:13px}.footer-links a:hover{color:var(--coral)}.copyright{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;color:#918496;font-size:12px;display:flex;justify-content:space-between;gap:20px}
@media(max-width:1024px){.nav-links{gap:0}.nav-links a{padding:8px}.hero-grid{gap:35px}.app-grid{gap:35px}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}}
@media(max-width:768px){.container{width:min(100% - 32px,var(--container))}.navbar{min-height:68px}.menu-toggle{display:block;margin-left:auto}.nav-links{display:none;position:absolute;left:16px;right:16px;top:70px;background:var(--ink);padding:12px;border:1px solid rgba(255,255,255,.15);border-radius:13px;flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:12px 15px}.nav-cta{display:none}.hero{padding:55px 0 65px}.hero-grid,.brand-zone,.news-layout,.app-grid,.support-grid{grid-template-columns:1fr}.hero-visual{min-height:285px}.visual-screen{height:190px}.signal-grid{grid-template-columns:1fr 1fr}.signal{border:0}.section{padding:62px 0}.section-head{display:block}.section-intro{margin-top:10px}.topic-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto}.topic-large{grid-column:span 2;grid-row:auto;min-height:245px}.event-strip{grid-template-columns:1fr;gap:20px}.event{border:0;border-bottom:1px solid rgba(255,255,255,.18);padding:0 0 15px}.event:last-child{border:0;padding-bottom:0}.steps{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.cta-box{display:block;padding:34px 28px}.cta-box .button{margin-top:22px}.copyright{display:block}.copyright span{display:block;margin-top:7px}}
@media(max-width:520px){body{font-size:14px}.hero h1{font-size:35px}.hero-copy{font-size:15px}.hero-actions .button{width:100%}.signal-grid{grid-template-columns:1fr}.signal{border-bottom:1px solid #e9cfc4;padding-bottom:12px}.signal:last-child{border:0}.brand-panel,.brand-info{padding:27px}.info-list{grid-template-columns:1fr}.timeline-item{grid-template-columns:75px 1fr auto;gap:10px}.timeline-item .tag{grid-column:2}.timeline-item p{grid-column:2}.topic-grid{grid-template-columns:1fr}.topic-large{grid-column:auto}.topic-small{min-height:120px}.app-art{min-height:300px}.app-art:before{transform:scale(.77) rotate(-8deg)}.app-art:after{top:116px}.download-box{align-items:flex-start}.footer-grid{grid-template-columns:1fr}.footer-links{margin-bottom:8px}}

/* roulang page: category1 */
:root{
      --ink:#241b2d;
      --ink-2:#3b2c49;
      --coral:#ef7657;
      --coral-dark:#d85e43;
      --lime:#b9d866;
      --cream:#fbf7f0;
      --paper:#fffdfa;
      --peach:#fff0e7;
      --muted:#766c7b;
      --line:#e8ded5;
      --shadow:0 16px 42px rgba(47,31,51,.09);
      --shadow-sm:0 8px 20px rgba(47,31,51,.07);
      --radius:18px;
      --container:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--cream);font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(239,118,87,.45);outline-offset:3px}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .site-header{background:var(--ink);color:#fff;position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(255,255,255,.1)}
    .navbar{min-height:78px;display:flex;align-items:center;gap:34px}
    .brand{display:flex;align-items:center;gap:12px;min-width:max-content}
    .brand-mark{width:38px;height:38px;border-radius:11px;background:var(--coral);display:grid;place-items:center;font-weight:900;font-size:19px;color:#fff}
    .brand-text{font-size:19px;font-weight:800;letter-spacing:.02em}
    .brand-text small{display:block;color:#d9cedd;font-size:10px;line-height:1.1;font-weight:500;letter-spacing:.12em}
    .nav-links{display:flex;align-items:center;gap:7px;margin-left:auto}
    .nav-links a{padding:9px 13px;border-radius:9px;color:#d9cedd;font-size:14px;transition:.2s ease}
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.1)}
    .nav-links a.active{box-shadow:inset 0 -2px var(--coral)}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;padding:12px 19px;font-weight:750;transition:.2s ease}
    .nav-cta{background:var(--coral);color:#fff;white-space:nowrap}
    .nav-cta:hover,.button.primary:hover{background:var(--coral-dark);transform:translateY(-2px);color:#fff}
    .menu-toggle{display:none;background:none;color:#fff;font-size:25px}
    .page-hero{background:var(--ink);color:#fff;padding:58px 0 64px;position:relative;overflow:hidden}
    .page-hero:after{content:"01";position:absolute;right:9%;bottom:-45px;color:rgba(255,255,255,.05);font-size:210px;font-weight:900;line-height:1}
    .breadcrumb{position:relative;z-index:1;color:#bfb1c4;font-size:13px;margin-bottom:26px}
    .breadcrumb a:hover{color:#fff}
    .breadcrumb span{margin:0 9px;color:var(--coral)}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;border-radius:999px;font-size:12px;font-weight:800;letter-spacing:.04em}
    .eyebrow{color:#ffd4c8;background:rgba(239,118,87,.16);padding:7px 12px;position:relative;z-index:1}
    .eyebrow:before{content:"";width:7px;height:7px;background:var(--coral);border-radius:50%}
    .page-hero h1{position:relative;z-index:1;font-size:clamp(34px,5vw,58px);line-height:1.18;letter-spacing:-.04em;margin:18px 0 15px;max-width:820px}
    .page-hero p{position:relative;z-index:1;color:#d6cad9;max-width:700px;font-size:16px;margin:0}
    .section{padding:78px 0}
    .section.alt{background:var(--paper)}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}
    .section-kicker{color:var(--coral-dark);font-size:12px;font-weight:850;letter-spacing:.14em}
    .section h2{font-size:clamp(27px,3vw,40px);line-height:1.25;margin:7px 0 0;letter-spacing:-.025em}
    .section-intro{color:var(--muted);max-width:590px;margin:0}
    .signal-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .signal{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:20px 22px}
    .signal strong{display:block;font-size:18px;margin-bottom:4px}
    .signal span{display:block;color:var(--muted);font-size:13px}
    .news-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:22px}
    .feature-card,.news-card,.scene-card,.guide-card,.faq-item{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);transition:.22s ease}
    .feature-card{padding:34px;min-height:300px;background:linear-gradient(145deg,#fffdfa 52%,#ffe6d9)}
    .feature-card:hover,.news-card:hover,.scene-card:hover,.guide-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .tag{padding:5px 10px;background:#f9e2d7;color:var(--coral-dark);width:max-content}
    .feature-card h3{font-size:29px;line-height:1.35;margin:20px 0 12px;max-width:580px}
    .feature-card p{color:var(--muted);max-width:590px}
    .news-meta{color:var(--muted);font-size:12px;display:flex;gap:14px;align-items:center;flex-wrap:wrap}
    .news-list{display:flex;flex-direction:column;gap:12px}
    .news-card{display:block;padding:20px 22px}
    .news-card h3{font-size:17px;line-height:1.45;margin:9px 0 5px}
    .news-card p{font-size:13px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .timeline{display:grid;gap:12px}
    .timeline-item{display:grid;grid-template-columns:105px 115px minmax(0,1fr) auto;gap:20px;align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:18px 22px;transition:.2s ease}
    .timeline-item:hover{border-color:var(--coral);box-shadow:var(--shadow-sm)}
    .timeline-item time{font-weight:800;color:var(--coral-dark);font-size:13px}
    .timeline-item .tag{font-size:11px}
    .timeline-item h3{font-size:16px;margin:0;line-height:1.45}
    .timeline-item p{color:var(--muted);font-size:13px;margin:0}
    .arrow{font-size:21px;color:var(--coral)}
    .empty-state{padding:35px;text-align:center;border:1px dashed #d8c8bd;border-radius:16px;color:var(--muted);background:#fffaf5}
    .empty-state strong{display:block;color:var(--ink);font-size:18px;margin-bottom:6px}
    .scene-grid{display:grid;grid-template-columns:1.35fr .85fr .85fr;gap:16px}
    .scene-card{padding:26px;min-height:170px}
    .scene-card.large{grid-row:span 2;background:var(--ink);color:#fff;min-height:356px}
    .scene-card h3{font-size:21px;margin:16px 0 8px}
    .scene-card p{color:var(--muted);font-size:14px;margin:0}
    .scene-card.large p{color:#d6cad9;max-width:340px}
    .scene-number{font-size:12px;color:var(--coral-dark);font-weight:850;letter-spacing:.1em}
    .scene-card.large .scene-number{color:#ff9b7f}
    .guide-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:stretch}
    .guide-intro{background:#f3e8e1;border-radius:var(--radius);padding:34px}
    .guide-intro h2{font-size:30px;line-height:1.3;margin:10px 0 15px}
    .guide-intro p{color:var(--muted);margin:0}
    .guide-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .guide-card{padding:24px}
    .guide-card b{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:var(--lime);color:var(--ink);margin-bottom:18px}
    .guide-card h3{font-size:17px;margin:0 0 8px}
    .guide-card p{font-size:13px;color:var(--muted);margin:0}
    .faq-list{display:grid;gap:10px;max-width:860px}
    .faq-item{padding:0 22px}
    .faq-item summary{cursor:pointer;list-style:none;padding:19px 0;font-weight:750;position:relative;padding-right:30px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";position:absolute;right:0;color:var(--coral);font-size:20px}
    .faq-item[open] summary:after{content:"－"}
    .faq-answer{color:var(--muted);font-size:14px;padding:0 30px 19px 0}
    .cta-section{padding:70px 0}
    .cta-box{background:var(--ink);border-radius:24px;padding:44px 52px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta-box h2{font-size:32px;line-height:1.3;margin:0 0 10px}
    .cta-box p{color:#d6cad9;margin:0;max-width:650px}
    .button.primary{background:var(--coral);color:#fff}
    .button.light{background:#fff;color:var(--ink)}
    .button.light:hover{background:var(--peach);transform:translateY(-2px)}
    .site-footer{background:var(--ink);color:#fff;padding:52px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .footer-brand p{color:#bfb1c4;font-size:13px;max-width:250px;margin-top:18px}
    .footer-title{font-size:14px;font-weight:800;margin-bottom:14px}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:#bfb1c4;font-size:13px;transition:.2s}
    .footer-links a:hover{color:#fff;padding-left:3px}
    .copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#96899d;font-size:12px}
    @media (max-width:1024px){
      .navbar{gap:18px}.nav-links a{padding:8px 8px}.signal-grid{grid-template-columns:repeat(2,1fr)}
      .news-layout,.guide-layout{grid-template-columns:1fr}.scene-grid{grid-template-columns:1fr 1fr}.scene-card.large{grid-row:auto;min-height:250px}
    }
    @media (max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .navbar{min-height:68px}.menu-toggle{display:block;margin-left:auto}.nav-links{display:none;position:absolute;left:16px;right:16px;top:74px;background:var(--ink-2);padding:12px;border-radius:14px;box-shadow:var(--shadow)}
      .nav-links.open{display:grid}.nav-links a{padding:12px 14px}.nav-cta{display:none}
      .page-hero{padding:42px 0 50px}.page-hero h1{font-size:36px}.section{padding:55px 0}.section-head{display:block}.section-intro{margin-top:12px}
      .timeline-item{grid-template-columns:82px 1fr auto;gap:10px}.timeline-item .tag{grid-column:2}.timeline-item p{grid-column:2}.timeline-item .arrow{grid-column:3;grid-row:1 / span 3}
      .cta-box{display:block;padding:34px 26px}.cta-box .button{margin-top:24px}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:5px}
    }
    @media (max-width:520px){
      .brand-text{font-size:16px}.brand-mark{width:34px;height:34px}.signal-grid,.scene-grid,.guide-list{grid-template-columns:1fr}
      .scene-card.large{min-height:210px}.feature-card{padding:25px}.feature-card h3{font-size:24px}
      .timeline-item{grid-template-columns:1fr auto}.timeline-item .tag,.timeline-item p{grid-column:1}.timeline-item .arrow{grid-column:2;grid-row:1 / span 3}
      .footer-grid{grid-template-columns:1fr}.page-hero h1{font-size:31px}
    }

/* roulang page: article */
:root{
      --ink:#241b2d;
      --ink-2:#3b2c49;
      --coral:#ef7657;
      --coral-dark:#d85e43;
      --lime:#b9d866;
      --cream:#fbf7f0;
      --paper:#fffdfa;
      --peach:#fff0e7;
      --muted:#766c7b;
      --line:#e8ded5;
      --shadow:0 16px 42px rgba(47,31,51,.09);
      --shadow-sm:0 8px 20px rgba(47,31,51,.07);
      --radius:18px;
      --container:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:var(--cream);
      font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
      font-size:15px;
      line-height:1.75;
    }
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(239,118,87,.45);outline-offset:3px}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .site-header{
      background:var(--ink);
      color:#fff;
      position:sticky;
      top:0;
      z-index:20;
      border-bottom:1px solid rgba(255,255,255,.1);
    }
    .navbar{min-height:78px;display:flex;align-items:center;gap:34px}
    .brand{display:flex;align-items:center;gap:12px;min-width:max-content}
    .brand-mark{
      width:38px;height:38px;border-radius:11px;background:var(--coral);
      display:grid;place-items:center;font-weight:900;font-size:19px;color:#fff
    }
    .brand-text{font-size:19px;font-weight:800;letter-spacing:.02em}
    .brand-text small{display:block;color:#d9cedd;font-size:10px;line-height:1.1;font-weight:500;letter-spacing:.12em}
    .nav-links{display:flex;align-items:center;gap:7px;margin-left:auto}
    .nav-links a{padding:9px 13px;border-radius:9px;color:#d9cedd;font-size:14px;transition:.2s ease}
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.1)}
    .nav-links a.active{box-shadow:inset 0 -2px var(--coral)}
    .nav-cta,.button{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border-radius:10px;padding:12px 19px;font-weight:750;transition:.2s ease
    }
    .nav-cta{background:var(--coral);color:#fff;white-space:nowrap}
    .nav-cta:hover,.button.primary:hover{background:var(--coral-dark);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;color:#fff;font-size:25px}
    .page-band{
      background:var(--paper);
      border-bottom:1px solid var(--line);
      padding:26px 0 24px;
    }
    .breadcrumb{
      display:flex;align-items:center;gap:9px;color:var(--muted);
      font-size:13px;flex-wrap:wrap
    }
    .breadcrumb a:hover{color:var(--coral-dark)}
    .breadcrumb .current{color:var(--ink);max-width:600px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .article-wrap{padding:62px 0 90px}
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,820px) 280px;
      gap:58px;
      align-items:start;
      justify-content:center;
    }
    .article-header{padding-bottom:30px;border-bottom:1px solid var(--line)}
    .tag{
      display:inline-flex;align-items:center;gap:7px;border-radius:999px;
      padding:6px 11px;background:#f9e2d7;color:var(--coral-dark);
      font-size:12px;font-weight:800
    }
    .article-header h1{
      font-size:clamp(30px,4vw,50px);
      line-height:1.24;
      letter-spacing:-.035em;
      margin:18px 0 18px;
      overflow-wrap:anywhere;
    }
    .article-description{font-size:17px;color:var(--muted);max-width:780px;margin:0 0 20px}
    .article-meta{display:flex;gap:18px;align-items:center;flex-wrap:wrap;color:var(--muted);font-size:13px}
    .meta-dot{width:5px;height:5px;border-radius:50%;background:var(--coral);display:inline-block}
    .reading-card{
      background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
      box-shadow:var(--shadow-sm);padding:38px 42px;min-width:0
    }
    .reading-card:empty{display:none}
    .article-content{font-size:16px;line-height:1.95;overflow-wrap:anywhere}
    .article-content h2{
      font-size:28px;line-height:1.35;margin:38px 0 14px;color:var(--ink)
    }
    .article-content h3{font-size:21px;line-height:1.45;margin:28px 0 10px}
    .article-content p{margin:0 0 20px}
    .article-content ul,.article-content ol{padding-left:1.5em;margin:0 0 22px}
    .article-content li{margin:7px 0}
    .article-content blockquote{
      margin:28px 0;padding:18px 22px;border-left:4px solid var(--coral);
      background:var(--peach);border-radius:0 12px 12px 0;color:var(--ink-2)
    }
    .article-content img{width:auto;max-width:100%;height:auto;border-radius:14px;margin:26px 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:10px 12px;text-align:left}
    .article-content th{background:var(--peach);font-weight:800}
    .article-content a{color:var(--coral-dark);text-decoration:underline;text-underline-offset:3px}
    .notice-box{
      display:flex;gap:14px;align-items:flex-start;background:#f2f7df;
      border:1px solid #dce8ad;border-radius:14px;padding:17px 19px;
      margin-top:25px;color:var(--ink-2);font-size:14px
    }
    .notice-icon{
      width:26px;height:26px;flex:0 0 26px;border-radius:50%;
      background:var(--lime);display:grid;place-items:center;font-weight:900
    }
    .side-stack{display:flex;flex-direction:column;gap:18px;position:sticky;top:108px}
    .side-card{
      background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
      padding:24px;box-shadow:var(--shadow-sm)
    }
    .side-card h2{font-size:18px;margin:0 0 15px}
    .side-card p{color:var(--muted);font-size:13px;margin:0 0 18px}
    .side-list{list-style:none;padding:0;margin:0}
    .side-list li{border-top:1px solid var(--line);padding:11px 0;font-size:14px}
    .side-list li:first-child{border-top:0;padding-top:0}
    .side-list a{transition:.2s;color:var(--ink-2)}
    .side-list a:hover{color:var(--coral-dark);padding-left:4px}
    .button.primary{background:var(--coral);color:#fff}
    .button.outline{border:1px solid var(--line);color:var(--ink);background:transparent}
    .button.outline:hover{border-color:var(--coral);color:var(--coral-dark);background:#fff}
    .button.full{width:100%}
    .article-footer{
      margin-top:28px;padding-top:22px;border-top:1px solid var(--line);
      display:flex;justify-content:space-between;gap:18px;align-items:center;flex-wrap:wrap
    }
    .article-tags{display:flex;gap:8px;flex-wrap:wrap}
    .article-tags span{font-size:12px;color:var(--muted);background:#f3ece5;border-radius:999px;padding:5px 10px}
    .action-row{display:flex;gap:10px;flex-wrap:wrap}
    .empty-state{
      background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
      padding:70px 30px;text-align:center;box-shadow:var(--shadow-sm)
    }
    .empty-state h1{font-size:34px;margin:0 0 12px}
    .empty-state p{color:var(--muted);margin:0 0 24px}
    .site-footer{background:var(--ink);color:#fff;padding:58px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
    .footer-brand .brand{margin-bottom:18px}
    .footer-brand p{color:#cfc2d2;font-size:13px;max-width:270px}
    .footer-title{font-size:14px;font-weight:800;margin-bottom:14px}
    .footer-links{display:flex;flex-direction:column;gap:8px}
    .footer-links a{color:#cfc2d2;font-size:13px;transition:.2s}
    .footer-links a:hover{color:#fff;padding-left:3px}
    .copyright{
      border-top:1px solid rgba(255,255,255,.13);margin-top:38px;padding-top:18px;
      color:#a99cad;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap
    }
    @media (max-width:1024px){
      .navbar{gap:16px}
      .nav-links a{padding-left:9px;padding-right:9px}
      .article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:28px}
      .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
      .footer-grid>div:last-child{grid-column:2}
    }
    @media (max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .navbar{min-height:68px}
      .menu-toggle{display:block;margin-left:auto}
      .nav-links{
        display:none;position:absolute;left:16px;right:16px;top:68px;
        background:var(--ink-2);padding:12px;border-radius:0 0 14px 14px;
        flex-direction:column;align-items:stretch;box-shadow:var(--shadow)
      }
      .nav-links.open{display:flex}
      .nav-links a{padding:13px 15px}
      .nav-cta{padding:9px 13px;font-size:13px}
      .article-wrap{padding:40px 0 60px}
      .article-layout{display:block}
      .side-stack{position:static;margin-top:28px;display:grid;grid-template-columns:1fr 1fr}
      .reading-card{padding:27px 22px}
      .article-header h1{font-size:32px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-grid>div:last-child{grid-column:auto}
    }
    @media (max-width:520px){
      .brand-text{font-size:16px}
      .brand-mark{width:34px;height:34px}
      .brand-text small{font-size:8px}
      .nav-cta{display:none}
      .page-band{padding:18px 0}
      .article-header h1{font-size:28px}
      .article-description{font-size:15px}
      .reading-card{padding:23px 17px}
      .article-content{font-size:15px}
      .article-content h2{font-size:24px}
      .side-stack{display:flex}
      .article-footer{align-items:flex-start}
      .action-row,.action-row .button{width:100%}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:last-child{grid-column:auto}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:5px}
    }

/* roulang page: category3 */
:root{
      --ink:#241b2d;
      --ink-2:#3b2c49;
      --coral:#ef7657;
      --coral-dark:#d85e43;
      --lime:#b9d866;
      --cream:#fbf7f0;
      --paper:#fffdfa;
      --peach:#fff0e7;
      --muted:#766c7b;
      --line:#e8ded5;
      --shadow:0 16px 42px rgba(47,31,51,.09);
      --shadow-sm:0 8px 20px rgba(47,31,51,.07);
      --radius:18px;
      --container:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--cream);line-height:1.75;font-size:15px}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--lime);outline-offset:3px}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .site-header{background:var(--ink);color:#fff;position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(255,255,255,.1)}
    .navbar{min-height:78px;display:flex;align-items:center;gap:34px}
    .brand{display:flex;align-items:center;gap:12px;min-width:max-content}
    .brand-mark{width:38px;height:38px;border-radius:11px;background:var(--coral);display:grid;place-items:center;font-weight:900;font-size:19px;color:#fff}
    .brand-text{font-size:19px;font-weight:800;letter-spacing:.02em}
    .brand-text small{display:block;color:#d9cedd;font-size:10px;line-height:1.1;font-weight:500;letter-spacing:.12em}
    .nav-links{display:flex;align-items:center;gap:7px;margin-left:auto}
    .nav-links a{padding:9px 13px;border-radius:9px;color:#d9cedd;font-size:14px;transition:.2s ease}
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.1)}
    .nav-links a.active{box-shadow:inset 0 -2px var(--coral)}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;padding:12px 19px;font-weight:750;transition:.2s ease}
    .nav-cta{background:var(--coral);color:#fff;white-space:nowrap}
    .nav-cta:hover,.button.primary:hover{background:var(--coral-dark);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;color:#fff;font-size:25px}
    .page-intro{background:var(--ink);color:#fff;padding:54px 0 62px}
    .crumbs{font-size:13px;color:#cfc2d2;margin-bottom:25px}
    .crumbs a:hover{color:#fff}
    .crumbs span{margin:0 8px;color:var(--coral)}
    .intro-grid{display:grid;grid-template-columns:1fr .7fr;gap:60px;align-items:end}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;border-radius:999px;font-size:12px;font-weight:800;letter-spacing:.04em}
    .eyebrow{color:#ffd4c8;background:rgba(239,118,87,.16);padding:7px 12px}
    .eyebrow:before{content:"";width:7px;height:7px;background:var(--coral);border-radius:50%}
    .page-intro h1{font-size:clamp(34px,5vw,58px);line-height:1.18;letter-spacing:-.04em;margin:18px 0 15px}
    .page-intro h1 em{font-style:normal;color:#ff9b7f}
    .intro-copy{color:#d6cad9;font-size:17px;max-width:700px;margin:0}
    .intro-note{border-left:2px solid var(--coral);padding:12px 0 12px 22px;color:#e7dce8}
    .intro-note strong{display:block;color:#fff;font-size:22px;margin-bottom:4px}
    .section{padding:78px 0}
    .section.alt{background:#f3e8e1}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}
    .section-kicker{color:var(--coral-dark);font-size:12px;font-weight:850;letter-spacing:.14em}
    .section h2{font-size:clamp(27px,3vw,40px);line-height:1.25;margin:7px 0 0;letter-spacing:-.025em}
    .section-intro{color:var(--muted);max-width:580px;margin:8px 0 0}
    .tag{padding:5px 10px;background:#f9e2d7;color:var(--coral-dark);width:max-content}
    .topic-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .topic-large,.topic-small,.feature-panel,.scene-card,.guide-card,.faq-item,.update-row{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);transition:.22s ease}
    .topic-large:hover,.topic-small:hover,.feature-panel:hover,.scene-card:hover,.guide-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .topic-large{padding:36px;min-height:310px;background:linear-gradient(140deg,#fffdfa 50%,#ffe5d8)}
    .topic-large h3{font-size:30px;line-height:1.3;margin:18px 0 12px}
    .topic-large p,.topic-small p,.feature-panel p,.scene-card p,.guide-card p{color:var(--muted);margin:0}
    .topic-large .topic-number{font-size:92px;font-weight:900;color:rgba(239,118,87,.22);line-height:1;float:right}
    .topic-stack{display:grid;gap:18px}
    .topic-small{padding:27px;min-height:146px}
    .topic-small h3{font-size:20px;margin:12px 0 5px}
    .topic-small .topic-icon{font-size:25px;color:var(--coral-dark);font-weight:800}
    .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .feature-panel{padding:27px;min-height:220px}
    .feature-panel strong{display:flex;align-items:center;gap:12px;font-size:19px;margin-bottom:14px}
    .feature-index{width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:13px}
    .feature-panel:first-child .feature-index{background:var(--coral)}
    .update-list{display:grid;gap:12px}
    .update-row{display:grid;grid-template-columns:88px 115px 1fr auto;gap:18px;align-items:center;padding:18px 22px}
    .update-row time{font-size:13px;font-weight:800;color:var(--coral-dark)}
    .update-row h3{font-size:16px;margin:0;line-height:1.45}
    .update-row p{color:var(--muted);font-size:13px;margin:3px 0 0}
    .arrow{font-size:20px;color:var(--coral)}
    .scene-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:stretch}
    .scene-aside{background:var(--ink);border-radius:var(--radius);padding:35px;color:#fff}
    .scene-aside h3{font-size:27px;line-height:1.35;margin:14px 0}
    .scene-aside p{color:#d6cad9}
    .scene-list{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    .scene-card{padding:23px}
    .scene-card h3{font-size:18px;margin:0 0 8px}
    .scene-card b{color:var(--coral-dark);font-size:27px;display:block;margin-bottom:5px}
    .guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .guide-card{padding:25px}
    .guide-card .step{color:var(--coral-dark);font-size:13px;font-weight:850;letter-spacing:.1em}
    .guide-card h3{font-size:18px;margin:10px 0 7px}
    .security-strip{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
    .security-strip span{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:11px 16px;color:var(--ink-2);font-weight:700}
    .faq-list{display:grid;gap:12px;max-width:880px}
    .faq-item{padding:0 22px}
    .faq-item summary{list-style:none;cursor:pointer;padding:19px 0;font-weight:800;position:relative;padding-right:30px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";position:absolute;right:2px;color:var(--coral);font-size:23px;line-height:1}
    .faq-item[open] summary:after{content:"−"}
    .faq-answer{border-top:1px solid var(--line);padding:14px 0 19px;color:var(--muted)}
    .cta{background:var(--ink);color:#fff;padding:62px 0}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .cta h2{font-size:clamp(26px,3vw,38px);margin:0 0 8px}
    .cta p{color:#d6cad9;margin:0;max-width:620px}
    .button{border:1px solid transparent}
    .button.primary{background:var(--coral);color:#fff}
    .button.light{background:#fff;color:var(--ink)}
    .button.outline{border-color:var(--line);color:var(--ink)}
    .button.outline:hover{border-color:var(--coral);color:var(--coral)}
    .site-footer{background:#1d1624;color:#fff;padding:54px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:35px}
    .footer-brand p{color:#bdb1c1;max-width:300px;margin-top:18px}
    .footer-title{font-weight:800;margin-bottom:14px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:#bdb1c1;font-size:14px;transition:.2s}
    .footer-links a:hover{color:#fff;padding-left:3px}
    .copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#988b9e;font-size:12px}
    @media(max-width:1024px){
      .navbar{gap:16px}.nav-links{gap:2px}.nav-links a{padding:8px 9px}
      .intro-grid,.scene-layout{gap:30px}.topic-layout{grid-template-columns:1fr}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .menu-toggle{display:block;margin-left:auto}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:70px;background:var(--ink-2);padding:12px;border-radius:12px;box-shadow:var(--shadow)}
      .nav-links.open{display:grid}
      .nav-links a{padding:13px 15px}
      .nav-cta{display:none}
      .intro-grid,.feature-grid,.guide-grid{grid-template-columns:1fr}
      .page-intro{padding:38px 0 48px}
      .section{padding:56px 0}
      .section-head{display:block;margin-bottom:22px}
      .update-row{grid-template-columns:78px 1fr auto;gap:10px}
      .update-row .tag{grid-column:2}
      .update-row p{grid-column:2}
      .scene-layout{grid-template-columns:1fr}
      .cta-inner{display:block}.cta .button{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:520px){
      .brand-text{font-size:16px}.brand-mark{width:34px;height:34px}
      .page-intro h1{font-size:34px}.intro-copy{font-size:15px}
      .topic-large{padding:25px;min-height:270px}.topic-large h3{font-size:25px}
      .scene-list{grid-template-columns:1fr}
      .update-row{grid-template-columns:1fr auto;padding:17px}
      .update-row .tag,.update-row p{grid-column:1}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:block}.copyright span{display:block;margin-top:6px}
    }

/* roulang page: category2 */
:root{
      --ink:#241b2d;
      --ink-2:#3b2c49;
      --coral:#ef7657;
      --coral-dark:#d85e43;
      --lime:#b9d866;
      --cream:#fbf7f0;
      --paper:#fffdfa;
      --peach:#fff0e7;
      --muted:#766c7b;
      --line:#e8ded5;
      --shadow:0 16px 42px rgba(47,31,51,.09);
      --shadow-sm:0 8px 20px rgba(47,31,51,.07);
      --radius:18px;
      --container:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
      color:var(--ink);
      background:var(--cream);
      line-height:1.75;
      font-size:15px;
    }
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(239,118,87,.45);outline-offset:3px}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .site-header{background:var(--ink);color:#fff;position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(255,255,255,.1)}
    .navbar{min-height:78px;display:flex;align-items:center;gap:34px}
    .brand{display:flex;align-items:center;gap:12px;min-width:max-content}
    .brand-mark{width:38px;height:38px;border-radius:11px;background:var(--coral);display:grid;place-items:center;font-weight:900;font-size:19px;color:#fff}
    .brand-text{font-size:19px;font-weight:800;letter-spacing:.02em}
    .brand-text small{display:block;color:#d9cedd;font-size:10px;line-height:1.1;font-weight:500;letter-spacing:.12em}
    .nav-links{display:flex;align-items:center;gap:7px;margin-left:auto}
    .nav-links a{padding:9px 13px;border-radius:9px;color:#d9cedd;font-size:14px;transition:.2s ease}
    .nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.1)}
    .nav-links a.active{box-shadow:inset 0 -2px var(--coral)}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;padding:12px 19px;font-weight:750;transition:.2s ease}
    .nav-cta{background:var(--coral);color:#fff;white-space:nowrap}
    .nav-cta:hover,.button.primary:hover{background:var(--coral-dark);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;color:#fff;font-size:25px}
    .page-heading{background:var(--ink);color:#fff;padding:54px 0 60px;position:relative;overflow:hidden}
    .page-heading:after{content:"NG28";position:absolute;right:4%;bottom:-38px;color:rgba(255,255,255,.045);font-weight:900;font-size:170px;line-height:1}
    .heading-inner{position:relative;z-index:1;display:flex;align-items:end;justify-content:space-between;gap:35px}
    .breadcrumb{display:flex;gap:10px;align-items:center;color:#cfc2d2;font-size:13px;margin-bottom:17px}
    .breadcrumb a:hover{color:#fff}
    .breadcrumb span{color:var(--coral)}
    .eyebrow,.tag,.status{display:inline-flex;align-items:center;gap:7px;border-radius:999px;font-size:12px;font-weight:800;letter-spacing:.04em}
    .eyebrow{color:#ffd4c8;background:rgba(239,118,87,.16);padding:7px 12px}
    .eyebrow:before{content:"";width:7px;height:7px;background:var(--coral);border-radius:50%}
    .page-heading h1{font-size:clamp(30px,4.5vw,54px);line-height:1.18;letter-spacing:-.04em;margin:0 0 15px;max-width:720px}
    .heading-copy{color:#d6cad9;max-width:660px;font-size:16px;margin:0}
    .heading-stamp{border:1px solid rgba(255,255,255,.15);padding:19px 21px;border-radius:15px;min-width:190px;background:rgba(255,255,255,.05)}
    .heading-stamp strong{display:block;color:#fff;font-size:25px;line-height:1.2}
    .heading-stamp small{display:block;color:#d6cad9;margin-top:5px}
    .section{padding:84px 0}
    .section.compact{padding-top:62px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}
    .section-kicker{color:var(--coral-dark);font-size:12px;font-weight:850;letter-spacing:.14em;text-transform:uppercase}
    .section h2{font-size:clamp(26px,3vw,38px);line-height:1.25;margin:7px 0 0;letter-spacing:-.025em}
    .section-intro{color:var(--muted);max-width:570px;margin:0}
    .tag{padding:5px 10px;background:#f9e2d7;color:var(--coral-dark);width:max-content}
    .button{border:1px solid transparent}
    .button.primary{background:var(--coral);color:#fff}
    .button.light{background:#fff;color:var(--ink)}
    .button.outline{border-color:var(--line);color:var(--ink);background:var(--paper)}
    .button.outline:hover{border-color:var(--coral);color:var(--coral)}
    .app-overview{display:grid;grid-template-columns:1.08fr .92fr;gap:26px;align-items:stretch}
    .app-card,.version-card,.device-card,.download-panel,.step-card,.security-card,.faq-item,.record-row{
      background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
    }
    .app-card{padding:36px 38px;display:flex;flex-direction:column;justify-content:space-between;min-height:330px}
    .app-card h2{font-size:32px;line-height:1.3;margin:17px 0 12px}
    .app-card p{color:var(--muted);max-width:620px;margin:0}
    .app-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
    .app-points span{background:var(--peach);border-radius:9px;padding:8px 12px;font-size:13px;color:var(--ink-2)}
    .version-card{padding:31px;background:var(--ink);color:#fff;position:relative;overflow:hidden}
    .version-card:before{content:"APP";position:absolute;right:-8px;top:25px;font-size:88px;font-weight:900;line-height:1;color:rgba(255,255,255,.06)}
    .version-card h3{font-size:22px;margin:0 0 24px;position:relative}
    .version-line{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.13);padding:14px 0;position:relative}
    .version-line span{color:#cfc2d2;font-size:13px}
    .version-line strong{font-size:14px;text-align:right}
    .status{padding:5px 10px;background:rgba(185,216,102,.17);color:#d9ee91}
    .download-section{background:#f3e8e1}
    .download-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:stretch}
    .device-card{padding:29px;display:flex;align-items:center;justify-content:center;min-height:410px;background:#eadbd4}
    .device-shell{width:205px;height:350px;border:8px solid var(--ink);border-radius:31px;background:#fffdfa;box-shadow:var(--shadow);padding:15px;position:relative}
    .device-shell:before{content:"";display:block;width:62px;height:6px;border-radius:6px;background:var(--ink);margin:0 auto 22px}
    .device-top{font-size:13px;font-weight:800;margin-bottom:17px}
    .device-banner{height:83px;border-radius:13px;background:var(--ink);padding:14px;color:#fff;position:relative;overflow:hidden}
    .device-banner strong{font-size:20px;display:block;line-height:1.2}
    .device-banner small{color:#d6cad9;font-size:10px}
    .device-banner:after{content:"28";position:absolute;right:-2px;bottom:-15px;color:rgba(255,255,255,.12);font-size:75px;font-weight:900}
    .device-label{font-size:11px;color:var(--muted);margin:18px 0 8px}
    .device-bars{display:grid;gap:8px}
    .device-bars span{height:25px;background:var(--peach);border-radius:7px}
    .device-bars span:nth-child(2){width:78%;background:#edf3d5}
    .device-bars span:nth-child(3){width:88%;background:#f1e6dc}
    .download-panel{padding:36px;background:var(--paper)}
    .download-panel h2{margin:12px 0 10px;font-size:31px}
    .download-panel p{color:var(--muted);margin:0}
    .download-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:27px 0}
    .meta-box{padding:14px 13px;background:var(--cream);border-radius:12px}
    .meta-box small{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}
    .meta-box strong{font-size:15px}
    .download-actions{display:flex;gap:12px;flex-wrap:wrap}
    .download-note{margin-top:18px;padding:13px 15px;border-left:3px solid var(--lime);background:#f4f8e6;color:var(--ink-2);font-size:13px}
    .qr-area{display:flex;align-items:center;gap:18px;margin-top:25px;padding-top:22px;border-top:1px solid var(--line)}
    .qr-code{width:92px;height:92px;padding:7px;background:#fff;border:1px solid var(--line);display:grid;grid-template-columns:repeat(9,1fr);gap:2px}
    .qr-code i{display:block;background:var(--ink)}
    .qr-code i:nth-child(3n+1),.qr-code i:nth-child(8n+2),.qr-code i:nth-child(5n+3){background:var(--coral)}
    .qr-copy strong{display:block;font-size:15px}
    .qr-copy span{display:block;color:var(--muted);font-size:12px;margin-top:4px}
    .records{display:grid;gap:12px}
    .record-row{display:grid;grid-template-columns:115px 120px 1fr 120px;gap:20px;align-items:center;padding:19px 23px}
    .record-row time{font-size:13px;color:var(--coral-dark);font-weight:800}
    .record-row strong{font-size:16px}
    .record-row p{margin:0;color:var(--muted);font-size:13px}
    .record-row .status{justify-self:end}
    .feature-strip{display:grid;grid-template-columns:1fr 1fr;gap:25px}
    .feature-box{padding:30px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius)}
    .feature-box.accent{background:var(--ink);color:#fff;border-color:var(--ink)}
    .feature-box h3{font-size:21px;margin:15px 0 8px}
    .feature-box p{margin:0;color:var(--muted);font-size:14px}
    .feature-box.accent p{color:#d6cad9}
    .feature-number{font-size:13px;color:var(--coral-dark);font-weight:900;letter-spacing:.08em}
    .feature-box.accent .feature-number{color:#ffad98}
    .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
    .step-card{padding:27px;min-height:190px;transition:.2s ease}
    .step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm)}
    .step-no{width:37px;height:37px;background:var(--coral);color:#fff;border-radius:10px;display:grid;place-items:center;font-weight:900}
    .step-card h3{font-size:18px;margin:20px 0 7px}
    .step-card p{color:var(--muted);font-size:13px;margin:0}
    .device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
    .device-item{padding:23px;background:var(--paper);border:1px solid var(--line);border-radius:14px}
    .device-icon{width:36px;height:36px;border-radius:10px;background:#edf3d5;color:#586a20;display:grid;place-items:center;font-weight:900;margin-bottom:18px}
    .device-item strong{display:block;font-size:16px;margin-bottom:5px}
    .device-item span{font-size:13px;color:var(--muted)}
    .support-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:start}
    .security-card{padding:31px}
    .security-card h3{font-size:22px;margin:0 0 16px}
    .security-list{list-style:none;padding:0;margin:0;display:grid;gap:13px}
    .security-list li{position:relative;padding-left:25px;color:var(--muted);font-size:14px}
    .security-list li:before{content:"✓";position:absolute;left:0;top:1px;width:17px;height:17px;border-radius:50%;background:var(--lime);color:var(--ink);font-size:11px;font-weight:900;display:grid;place-items:center}
    .faq-list{display:grid;gap:11px}
    .faq-item{overflow:hidden}
    .faq-question{width:100%;background:var(--paper);display:flex;align-items:center;justify-content:space-between;text-align:left;padding:19px 22px;color:var(--ink);font-weight:750}
    .faq-question:hover{background:#fff5ef}
    .faq-question span:last-child{font-size:22px;color:var(--coral);transition:.2s}
    .faq-answer{display:none;padding:0 22px 20px;color:var(--muted);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .closing{padding:70px 0}
    .closing-inner{border-radius:22px;background:var(--ink);color:#fff;padding:42px 48px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .closing-inner h2{font-size:31px;line-height:1.3;margin:0 0 9px}
    .closing-inner p{margin:0;color:#d6cad9}
    .site-footer{background:var(--ink);color:#fff;padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .footer-brand p{color:#cfc2d2;font-size:13px;max-width:280px;margin:17px 0 0}
    .footer-title{font-weight:800;margin-bottom:13px}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:#cfc2d2;font-size:13px;transition:.2s}
    .footer-links a:hover{color:#ff9b7f}
    .copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#a99caf;font-size:12px}
    @media (max-width:1024px){
      .navbar{gap:18px}
      .nav-links a{padding:9px 8px}
      .app-overview,.download-layout,.support-layout{grid-template-columns:1fr}
      .heading-inner{align-items:start;flex-direction:column}
      .heading-stamp{min-width:230px}
    }
    @media (max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .navbar{min-height:70px}
      .menu-toggle{display:block;margin-left:auto}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:70px;margin:0;padding:12px;background:var(--ink-2);border:1px solid rgba(255,255,255,.14);border-radius:14px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
      .nav-links.open{display:flex}
      .nav-links a{padding:13px 15px}
      .navbar>.nav-cta{display:none}
      .page-heading{padding:42px 0 48px}
      .page-heading:after{font-size:110px;bottom:-20px}
      .section{padding:59px 0}
      .app-card{padding:29px 25px}
      .download-panel{padding:28px 24px}
      .download-meta{grid-template-columns:1fr 1fr}
      .record-row{grid-template-columns:1fr 1fr;gap:8px 16px}
      .record-row p{grid-column:1/-1}
      .record-row .status{justify-self:start}
      .feature-strip,.steps,.device-grid{grid-template-columns:1fr}
      .closing-inner{padding:32px 25px;display:block}
      .closing-inner .button{margin-top:23px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
      .copyright{display:block}
      .copyright span{display:block;margin-top:5px}
    }
    @media (max-width:520px){
      body{font-size:14px}
      .brand-text{font-size:16px}
      .brand-mark{width:34px;height:34px}
      .page-heading h1{font-size:31px}
      .heading-copy{font-size:14px}
      .heading-stamp{width:100%}
      .section-head{display:block}
      .section-intro{margin-top:12px}
      .device-card{min-height:370px}
      .download-meta{grid-template-columns:1fr}
      .download-actions .button{width:100%}
      .qr-area{align-items:flex-start}
      .footer-grid{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
    }