/* roulang page: index */
:root{--bg:#17131d;--surface:#211a2b;--surface2:#2a2136;--purple:#8e3fa8;--lime:#c8f04a;--text:#f8f4fa;--muted:#b8afbf;--line:rgba(255,255,255,.12);--radius:18px;--shadow:0 20px 60px rgba(0,0,0,.28);--container:1240px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{cursor:pointer}img{max-width:100%;display:block}.container{width:min(var(--container),calc(100% - 48px));margin:auto}.section{padding:88px 0}.eyebrow{display:inline-flex;gap:8px;align-items:center;color:var(--lime);font-size:13px;font-weight:800;letter-spacing:.08em}.eyebrow:before{content:"";width:26px;height:2px;background:var(--lime)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(40px,5vw,66px);line-height:1.12;letter-spacing:-.05em}h2{font-size:clamp(29px,3vw,42px);line-height:1.2;letter-spacing:-.035em;margin-bottom:16px}h3{font-size:20px;line-height:1.35;margin-bottom:10px}p{color:var(--muted)}.section-head{max-width:690px;margin-bottom:36px}.section-head p{margin-bottom:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 21px;border-radius:12px;border:1px solid transparent;font-weight:800;transition:.22s ease}.btn:hover{transform:translateY(-2px);filter:brightness(1.07)}.btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(200,240,74,.55);outline-offset:3px}.btn-primary{background:var(--lime);color:#19151e}.btn-secondary{background:rgba(255,255,255,.04);border-color:var(--line)}.tag{display:inline-flex;padding:4px 10px;border:1px solid rgba(200,240,74,.35);border-radius:99px;color:var(--lime);font-size:12px;font-weight:700}.site-header{position:sticky;top:0;z-index:20;background:rgba(23,19,29,.84);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:10px;font-size:16px;line-height:1.2;font-weight:900;max-width:250px}.brand-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,var(--lime),#8ddd66);color:#211a2b;font-weight:1000;font-size:17px;flex:none}.nav{display:flex;align-items:center;gap:3px}.nav a{padding:8px 12px;color:var(--muted);font-size:14px;font-weight:700;border-radius:8px;transition:.2s}.nav a:hover,.nav a.active{color:var(--text);background:rgba(255,255,255,.07)}.nav a.active{box-shadow:inset 0 -2px var(--lime)}.nav-actions{display:flex;align-items:center;gap:10px}.nav-actions .btn{min-height:40px;padding:0 15px;font-size:14px}.menu-toggle{display:none;background:none;border:0;color:var(--text);font-size:24px}.hero{position:relative;padding:86px 0 74px;overflow:hidden}.hero:before{content:"";position:absolute;width:680px;height:680px;right:-190px;top:-250px;background:radial-gradient(circle,rgba(142,63,168,.45),transparent 66%);pointer-events:none}.hero-grid{position:relative;display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:64px}.hero-copy p{max-width:600px;font-size:18px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:29px}.hero-visual{min-height:455px;position:relative}.orbit{position:absolute;inset:33px 10px 20px 38px;border:1px solid rgba(200,240,74,.25);border-radius:48% 52% 51% 49% / 38% 42% 58% 62%;transform:rotate(-13deg)}.main-panel{position:absolute;inset:73px 0 30px 42px;border:1px solid rgba(255,255,255,.18);border-radius:24px;background:linear-gradient(145deg,rgba(42,33,54,.95),rgba(22,18,29,.86));box-shadow:var(--shadow);padding:25px;transform:rotate(3deg)}.panel-top{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}.panel-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:13px;margin-top:25px}.tile{min-height:138px;padding:18px;border-radius:16px;background:#342641;position:relative;overflow:hidden}.tile:after{content:"";position:absolute;width:120px;height:120px;border-radius:50%;right:-35px;bottom:-40px;background:var(--purple);opacity:.7}.tile.lime{background:var(--lime);color:#1c1721}.tile.lime:after{background:#8e3fa8}.tile strong{position:relative;z-index:1;display:block;font-size:22px}.tile span{position:relative;z-index:1;font-size:13px;opacity:.75}.signal{position:absolute;left:0;bottom:0;width:100%;height:65px;display:flex;align-items:end;gap:8px;padding:0 18px 17px}.signal i{display:block;width:8px;border-radius:8px;background:var(--lime)}.signal i:nth-child(1){height:18px}.signal i:nth-child(2){height:35px}.signal i:nth-child(3){height:25px}.signal i:nth-child(4){height:49px}.quickbar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#1c1722}.quick-grid{display:grid;grid-template-columns:repeat(4,1fr)}.quick-item{padding:23px 24px;border-right:1px solid var(--line)}.quick-item:last-child{border:0}.quick-item b{display:block;color:var(--lime);font-size:14px}.quick-item span{font-size:13px;color:var(--muted)}.featured{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}.feature-main,.feature-small{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);overflow:hidden;transition:.25s}.feature-main:hover,.feature-small:hover,.topic-card:hover,.news-item:hover,.service-card:hover{transform:translateY(-4px);border-color:rgba(200,240,74,.55)}.feature-main{min-height:355px;padding:32px;display:flex;flex-direction:column;justify-content:end;background:linear-gradient(135deg,rgba(142,63,168,.72),rgba(33,26,43,.78)),var(--surface)}.feature-main p{max-width:490px;color:#eee6f1}.feature-stack{display:grid;gap:18px}.feature-small{padding:23px;min-height:168px;display:flex;flex-direction:column;justify-content:space-between;background:var(--surface2)}.arrow{color:var(--lime);font-size:22px;font-weight:900}.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.topic-card{border:1px solid var(--line);border-radius:16px;padding:22px;background:var(--surface);transition:.22s}.topic-no{color:var(--lime);font-size:12px;font-weight:900}.topic-card p{font-size:14px;margin-bottom:16px}.news-layout{display:grid;grid-template-columns:.3fr 1fr;gap:32px}.news-aside{padding-top:9px}.news-aside p{font-size:14px}.news-list{border-top:1px solid var(--line)}.news-item{display:grid;grid-template-columns:112px 1fr auto;gap:20px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line);transition:.2s}.news-date{color:var(--lime);font-size:14px;font-weight:800}.news-item h3{margin:7px 0}.news-item p{font-size:14px;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.download{background:linear-gradient(120deg,#35203f,#211a2b);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.download-grid{display:grid;grid-template-columns:1fr .8fr;gap:70px;align-items:center}.checklist{list-style:none;padding:0;margin:25px 0}.checklist li{padding:9px 0;border-bottom:1px solid var(--line);color:var(--muted)}.checklist li:before{content:"✓";color:var(--lime);font-weight:900;margin-right:10px}.phone{width:260px;height:455px;margin:auto;border:10px solid #0e0c11;border-radius:37px;background:linear-gradient(165deg,#8e3fa8,#241a31 46%,#c8f04a);padding:20px;box-shadow:20px 24px 0 rgba(200,240,74,.1)}.phone-notch{width:90px;height:18px;background:#0e0c11;border-radius:0 0 13px 13px;margin:-20px auto 25px}.phone-card{height:105px;border-radius:16px;padding:15px;background:rgba(24,19,30,.7);margin-bottom:12px}.phone-card b{display:block}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.step{padding:26px;border-top:2px solid var(--lime);background:var(--surface);border-radius:0 0 16px 16px}.step em{font-size:13px;font-style:normal;color:var(--lime);font-weight:900}.notice-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.notice-panel,.empty-notice{border:1px solid var(--line);border-radius:var(--radius);padding:25px;background:var(--surface)}.notice-row{display:flex;gap:14px;padding:15px 0;border-bottom:1px solid var(--line)}.notice-row:last-child{border-bottom:0}.notice-date{color:var(--lime);font-weight:800;font-size:13px;white-space:nowrap}.benefits{display:grid;grid-template-columns:.8fr 1.2fr;gap:18px}.benefit-side{padding:30px;border-radius:var(--radius);background:var(--purple)}.benefit-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.benefit{border:1px solid var(--line);padding:19px;border-radius:15px;background:var(--surface)}.security{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}.security-item{padding:20px;border:1px solid var(--line);border-radius:14px;background:#1b1721}.security-item b{display:block;color:var(--lime);margin-bottom:7px}.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.timeline-item{position:relative;padding:20px 20px 20px 28px;border-left:2px solid var(--purple);background:var(--surface);border-radius:0 15px 15px 0}.timeline-item:before{content:"";position:absolute;width:10px;height:10px;left:-6px;top:25px;background:var(--lime);border-radius:50%}.guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.guide{padding:22px;border-radius:16px;background:var(--surface2);border:1px solid var(--line)}.guide b{color:var(--lime);font-size:13px}.faq{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:17px 0}summary{cursor:pointer;font-weight:800;list-style:none;display:flex;justify-content:space-between;gap:20px}summary:after{content:"+";color:var(--lime);font-size:21px}details[open] summary:after{content:"−"}details p{margin:13px 0 0;max-width:760px}.closing{padding:76px 0}.closing-box{padding:48px;border-radius:24px;background:linear-gradient(110deg,var(--purple),#512a69);display:flex;align-items:center;justify-content:space-between;gap:30px}.closing-box h2{margin:0}.closing-box p{color:#f0ddf5;margin:9px 0 0}.closing-actions{display:flex;gap:11px;flex:none}.site-footer{background:#110e15;border-top:1px solid var(--line);padding:55px 0 24px}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(2,.7fr);gap:42px}.footer-title{color:var(--text);font-weight:800;margin-bottom:12px}.footer-links{display:grid;gap:8px}.footer-links a{color:var(--muted);font-size:14px}.footer-links a:hover{color:var(--lime)}.copyright{margin-top:38px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;color:#82798a;font-size:13px}
@media(max-width:1024px){.nav{display:none}.menu-toggle{display:block}.hero-grid,.download-grid{gap:35px}.topic-grid{grid-template-columns:repeat(2,1fr)}.security{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.container{width:min(100% - 32px,var(--container))}.section{padding:58px 0}.nav-wrap{height:68px}.brand{font-size:13px;max-width:205px}.brand-mark{width:34px;height:34px}.nav-actions .btn-secondary{display:none}.hero{padding:58px 0}.hero-grid,.featured,.download-grid,.benefits,.notice-grid{grid-template-columns:1fr}.hero-copy p{font-size:16px}.hero-visual{min-height:330px;max-width:520px;width:100%;margin:auto}.main-panel{inset:40px 8px 10px 25px}.quick-grid{grid-template-columns:repeat(2,1fr)}.quick-item:nth-child(2){border-right:0}.quick-item{padding:17px}.news-layout{grid-template-columns:1fr;gap:5px}.news-aside{padding:0}.news-item{grid-template-columns:1fr;gap:7px}.news-item>.arrow{display:none}.steps,.timeline{grid-template-columns:1fr}.guide-grid{grid-template-columns:repeat(2,1fr)}.closing-box{padding:32px;display:block}.closing-actions{margin-top:23px;flex-wrap:wrap}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}}
@media(max-width:520px){h1{font-size:37px}.nav-actions .btn{padding:0 10px;font-size:12px;min-height:37px}.hero-actions,.closing-actions{display:grid;grid-template-columns:1fr}.hero-actions .btn,.closing-actions .btn{width:100%}.panel-grid{gap:8px}.tile{padding:12px;min-height:115px}.topic-grid,.guide-grid,.benefit-list,.security{grid-template-columns:1fr}.feature-main{padding:25px;min-height:310px}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-bottom:7px}}

/* roulang page: category1 */
:root{--bg:#17131d;--surface:#211a2b;--surface2:#2a2136;--purple:#8e3fa8;--lime:#c8f04a;--text:#f8f4fa;--muted:#b8afbf;--line:rgba(255,255,255,.12);--radius:18px;--shadow:0 20px 60px rgba(0,0,0,.28);--container:1240px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(34px,5vw,58px);line-height:1.18;letter-spacing:-.04em;font-weight:900}
h2{font-size:clamp(28px,3.4vw,40px);line-height:1.25;font-weight:850;letter-spacing:-.025em}
h3{font-size:20px;line-height:1.4;font-weight:800}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.section{padding:82px 0}
.eyebrow{display:inline-flex;gap:8px;align-items:center;color:var(--lime);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--lime)}
.section-head{max-width:700px;margin-bottom:34px}
.section-head p{color:var(--muted);margin-bottom:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 21px;border-radius:12px;border:1px solid transparent;font-weight:800;transition:.22s ease}
.btn:hover{transform:translateY(-2px);filter:brightness(1.07)}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(200,240,74,.55);outline-offset:3px}
.btn-primary{background:var(--lime);color:#19151e}
.btn-secondary{background:rgba(255,255,255,.04);border-color:var(--line)}
.tag{display:inline-flex;padding:4px 10px;border:1px solid rgba(200,240,74,.35);border-radius:99px;color:var(--lime);font-size:12px;font-weight:700}
.site-header{position:sticky;top:0;z-index:20;background:rgba(23,19,29,.87);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-size:16px;line-height:1.2;font-weight:900;max-width:250px}
.brand-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,var(--lime),#8ddd66);color:#211a2b;font-weight:1000;font-size:17px;flex:none}
.nav{display:flex;align-items:center;gap:3px}
.nav a{padding:8px 12px;color:var(--muted);font-size:14px;font-weight:700;border-radius:8px;transition:.2s}
.nav a:hover,.nav a.active{color:var(--text);background:rgba(255,255,255,.07)}
.nav a.active{box-shadow:inset 0 -2px var(--lime)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-actions .btn{min-height:40px;padding:0 15px;font-size:14px}
.menu-toggle{display:none;background:none;border:0;color:var(--text);font-size:24px}
.page-intro{position:relative;padding:76px 0 54px;border-bottom:1px solid var(--line);overflow:hidden}
.page-intro:after{content:"";position:absolute;width:420px;height:420px;right:-100px;top:-190px;background:radial-gradient(circle,rgba(142,63,168,.48),transparent 68%);pointer-events:none}
.intro-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.35fr .65fr;gap:60px;align-items:end}
.intro-copy p{max-width:680px;color:var(--muted);font-size:18px;margin:22px 0 0}
.intro-art{min-height:170px;border:1px solid var(--line);border-radius:24px;background:linear-gradient(145deg,var(--surface2),rgba(142,63,168,.42));padding:23px;position:relative;overflow:hidden}
.intro-art:before,.intro-art:after{content:"";position:absolute;border:1px solid rgba(200,240,74,.4);transform:rotate(35deg)}
.intro-art:before{width:170px;height:170px;right:-28px;top:-65px;border-radius:35px}
.intro-art:after{width:90px;height:90px;left:25px;bottom:-35px;border-radius:50%}
.art-label{position:relative;z-index:2;color:var(--lime);font-size:13px;font-weight:800}
.art-title{position:relative;z-index:2;margin-top:42px;font-size:25px;font-weight:850}
.info-strip{padding:20px 0;background:#1b1722;border-bottom:1px solid var(--line)}
.info-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.info-item{padding:7px 25px;border-right:1px solid var(--line)}
.info-item:first-child{padding-left:0}
.info-item:last-child{border:0}
.info-item b{display:block;color:var(--lime);font-size:14px}
.info-item span{color:var(--muted);font-size:13px}
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
.topic-card{min-height:245px;padding:24px;border:1px solid var(--line);border-radius:16px;background:var(--surface);transition:.22s;display:flex;flex-direction:column}
.topic-card:hover,.feature-card:hover,.step:hover,.faq-item:hover{transform:translateY(-4px);border-color:rgba(200,240,74,.55)}
.topic-number{color:var(--purple);font-size:30px;font-weight:900;line-height:1}
.topic-card h3{margin:25px 0 8px}
.topic-card p{color:var(--muted);font-size:14px;margin-bottom:auto}
.card-link{margin-top:20px;color:var(--lime);font-weight:800;font-size:14px}
.feature-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:18px}
.feature-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:30px;transition:.22s}
.feature-card.primary{min-height:300px;background:linear-gradient(140deg,rgba(142,63,168,.78),rgba(33,26,43,.9))}
.feature-card p{color:var(--muted)}
.feature-card.primary p{color:#eee8f2}
.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}
.feature-list .feature-card{min-height:142px;padding:22px}
.feature-list h3{font-size:18px;margin:13px 0 5px}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
.step{padding:25px;border-left:3px solid var(--purple);background:var(--surface);border-radius:0 16px 16px 0;border-top:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line);transition:.22s}
.step strong{display:block;color:var(--lime);font-size:13px;letter-spacing:.08em;margin-bottom:12px}
.step p{color:var(--muted);font-size:14px;margin-bottom:0}
.faq{border-top:1px solid var(--line);max-width:920px}
.faq-item{border-bottom:1px solid var(--line);transition:.22s}
.faq-item summary{padding:21px 4px;cursor:pointer;font-weight:800;list-style:none;display:flex;justify-content:space-between;gap:20px}
.faq-item summary:after{content:"＋";color:var(--lime);font-size:20px}
.faq-item[open] summary:after{content:"－"}
.faq-item p{color:var(--muted);font-size:15px;padding:0 35px 20px 4px;margin:0}
.cta-band{padding:38px 42px;border:1px solid rgba(200,240,74,.3);border-radius:22px;background:linear-gradient(110deg,rgba(142,63,168,.7),rgba(42,33,54,.9));display:flex;align-items:center;justify-content:space-between;gap:25px}
.cta-band p{color:#eee8f2;margin:8px 0 0}
.site-footer{background:#110e15;border-top:1px solid var(--line);padding:55px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.3fr repeat(2,.7fr);gap:42px}
.footer-grid p{color:var(--muted)}
.footer-title{color:var(--text);font-weight:800;margin-bottom:12px}
.footer-links{display:grid;gap:8px}
.footer-links a{color:var(--muted);transition:.2s}
.footer-links a:hover{color:var(--lime)}
.copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:40px;padding-top:20px;color:#817789;font-size:13px}
@media(max-width:1024px){.nav{gap:0}.nav a{padding:8px 8px}.intro-grid{gap:30px}.topic-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.container{width:min(var(--container),calc(100% - 32px))}.nav{display:none;position:absolute;left:16px;right:16px;top:70px;padding:12px;background:var(--surface);border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav.open{display:flex}.nav a{padding:12px 14px}.menu-toggle{display:block}.nav-actions .btn-secondary{display:none}.nav-wrap{height:70px}.brand{font-size:14px}.intro-grid,.feature-layout{grid-template-columns:1fr}.intro-art{min-height:130px}.info-grid{grid-template-columns:repeat(2,1fr);gap:12px}.info-item,.info-item:first-child{padding:8px 12px;border-right:0}.topic-grid,.scene-grid,.feature-list{grid-template-columns:1fr}.section{padding:60px 0}.cta-band{padding:28px 24px;display:block}.cta-band .btn{margin-top:22px;width:100%}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:6px}}
@media(max-width:520px){h1{font-size:34px}.page-intro{padding:58px 0 42px}.intro-copy p{font-size:16px}.info-grid{grid-template-columns:1fr 1fr}.info-item b{font-size:13px}.info-item span{font-size:12px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.copyright{font-size:12px}}

/* roulang page: article */
:root{
  --bg:#17131d;
  --surface:#211a2b;
  --surface2:#2a2136;
  --purple:#8e3fa8;
  --purple-dark:#623078;
  --lime:#c8f04a;
  --lime-soft:#e4f59d;
  --text:#f8f4fa;
  --muted:#b8afbf;
  --muted-dark:#8d8395;
  --line:rgba(255,255,255,.12);
  --line-strong:rgba(200,240,74,.35);
  --radius:18px;
  --shadow:0 20px 60px rgba(0,0,0,.28);
  --container:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
a:hover{color:inherit}
button,input,textarea{font:inherit}
button{cursor:pointer}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,h4,p{margin-top:0}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.025em}
h2{font-size:32px;line-height:1.3;margin-bottom:14px}
h3{font-size:20px;line-height:1.4;margin-bottom:10px}
p{color:var(--muted)}
.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
.section{padding:82px 0}
.section-head{max-width:720px;margin-bottom:34px}
.section-head p{margin-bottom:0}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--lime);
  font-size:13px;
  font-weight:800;
  letter-spacing:.08em;
  margin-bottom:16px;
}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--lime)}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-height:48px;
  padding:0 21px;
  border-radius:12px;
  border:1px solid transparent;
  font-weight:800;
  transition:transform .22s ease,filter .22s ease,background .22s ease,border-color .22s ease;
}
.btn:hover{transform:translateY(-2px);filter:brightness(1.07)}
.btn:focus-visible,a:focus-visible,button:focus-visible{
  outline:3px solid rgba(200,240,74,.55);
  outline-offset:3px;
}
.btn-primary{background:var(--lime);color:#19151e}
.btn-secondary{background:rgba(255,255,255,.04);border-color:var(--line);color:var(--text)}
.btn-secondary:hover{background:rgba(142,63,168,.25);border-color:rgba(200,240,74,.45)}
.tag{
  display:inline-flex;
  align-items:center;
  min-height:26px;
  padding:3px 10px;
  border:1px solid rgba(200,240,74,.35);
  border-radius:99px;
  color:var(--lime);
  font-size:12px;
  font-weight:700;
  line-height:1.3;
}
.site-header{
  position:sticky;
  top:0;
  z-index:30;
  background:rgba(23,19,29,.86);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  min-height:78px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  line-height:1.2;
  font-weight:900;
  max-width:250px;
}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:11px;
  display:grid;
  place-items:center;
  background:linear-gradient(135deg,var(--lime),#8ddd66);
  color:#211a2b;
  font-weight:1000;
  font-size:17px;
  flex:none;
}
.nav{display:flex;align-items:center;gap:3px}
.nav a{
  padding:8px 12px;
  color:var(--muted);
  font-size:14px;
  font-weight:700;
  border-radius:8px;
  transition:.2s;
}
.nav a:hover,.nav a.active{color:var(--text);background:rgba(255,255,255,.07)}
.nav a.active{box-shadow:inset 0 -2px var(--lime)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-actions .btn{min-height:40px;padding:0 15px;font-size:14px}
.menu-toggle{
  display:none;
  background:none;
  border:0;
  color:var(--text);
  font-size:24px;
  padding:4px 8px;
}
.article-intro{
  position:relative;
  padding:52px 0 44px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-intro:after{
  content:"";
  position:absolute;
  width:420px;
  height:420px;
  right:-170px;
  top:-170px;
  background:radial-gradient(circle,rgba(142,63,168,.35),transparent 67%);
  pointer-events:none;
}
.breadcrumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  color:var(--muted-dark);
  font-size:13px;
  margin-bottom:28px;
}
.breadcrumbs a{color:var(--muted)}
.breadcrumbs a:hover{color:var(--lime)}
.breadcrumbs .separator{color:var(--purple)}
.article-header{
  position:relative;
  z-index:1;
  max-width:900px;
}
.article-header h1{
  max-width:900px;
  margin:13px 0 19px;
  font-size:clamp(34px,5vw,58px);
  line-height:1.18;
  overflow-wrap:anywhere;
}
.article-lead{
  max-width:790px;
  color:#d7cedc;
  font-size:18px;
  line-height:1.85;
  margin-bottom:22px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 20px;
  color:var(--muted-dark);
  font-size:13px;
}
.meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--lime)}
.read-layout{
  display:grid;
  grid-template-columns:minmax(0,820px) 270px;
  gap:70px;
  align-items:start;
}
.article-content{
  min-width:0;
  font-size:17px;
  line-height:1.95;
  color:#e7dfea;
}
.article-content h2{
  margin:42px 0 17px;
  padding-left:16px;
  border-left:3px solid var(--lime);
  font-size:29px;
}
.article-content h3{
  margin:29px 0 12px;
  color:var(--lime-soft);
}
.article-content p{color:#d6cdd9;margin-bottom:22px}
.article-content ul,.article-content ol{
  margin:18px 0 25px;
  padding-left:25px;
  color:#d6cdd9;
}
.article-content li{padding:4px 0}
.article-content blockquote{
  margin:28px 0;
  padding:20px 24px;
  border-left:3px solid var(--purple);
  border-radius:0 14px 14px 0;
  background:rgba(142,63,168,.14);
  color:#eee7f1;
}
.article-content img{
  width:100%;
  border-radius:16px;
  border:1px solid var(--line);
  margin:28px 0 8px;
}
.article-content table{
  width:100%;
  margin:24px 0;
  border-collapse:collapse;
  color:#ded5e2;
}
.article-content th,.article-content td{
  border:1px solid var(--line);
  padding:12px 14px;
  text-align:left;
}
.article-content th{color:var(--lime);background:rgba(255,255,255,.04)}
.article-content hr{border:0;border-top:1px solid var(--line);margin:35px 0}
.article-content a{color:var(--lime);text-decoration:underline;text-underline-offset:3px}
.article-side{position:sticky;top:112px}
.side-card{
  padding:22px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--surface);
  margin-bottom:16px;
}
.side-card h3{font-size:17px;margin-bottom:12px}
.side-card p{font-size:14px;line-height:1.75;margin-bottom:0}
.side-list{list-style:none;padding:0;margin:0}
.side-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:10px 0;
  border-bottom:1px solid var(--line);
  color:var(--muted);
  font-size:14px;
}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list li:before{content:"•";color:var(--lime);font-size:22px;line-height:1}
.article-note{
  display:grid;
  grid-template-columns:44px 1fr;
  gap:16px;
  align-items:start;
  padding:25px 28px;
  border:1px solid rgba(200,240,74,.3);
  border-radius:var(--radius);
  background:linear-gradient(120deg,rgba(142,63,168,.22),rgba(33,26,43,.8));
}
.note-icon{
  width:44px;height:44px;border-radius:13px;
  display:grid;place-items:center;
  color:#211a2b;background:var(--lime);
  font-weight:900;font-size:20px;
}
.article-note h3{margin:0 0 5px;color:var(--text);font-size:19px}
.article-note p{margin:0;font-size:14px}
.article-links{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  padding-top:28px;
  margin-top:36px;
  border-top:1px solid var(--line);
}
.faq-section{background:rgba(33,26,43,.48)}
.faq{
  max-width:850px;
  border-top:1px solid var(--line);
}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;
  cursor:pointer;
  padding:19px 42px 19px 0;
  position:relative;
  color:var(--text);
  font-weight:800;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{
  content:"+";
  position:absolute;
  right:2px;
  top:13px;
  color:var(--lime);
  font-size:25px;
  font-weight:400;
}
.faq details[open] summary:after{content:"−"}
.faq details p{max-width:760px;padding:0 40px 19px 0;margin:0;font-size:15px}
.article-cta{
  padding:68px 0;
  background:linear-gradient(115deg,#4e2760 0%,#8e3fa8 56%,#5b2870 100%);
}
.cta-box{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
}
.cta-box h2{margin-bottom:9px}
.cta-box p{color:#eee4f1;margin-bottom:0;max-width:650px}
.cta-actions{display:flex;flex-wrap:wrap;gap:10px;flex:none}
.cta-actions .btn-secondary{background:rgba(23,19,29,.22);border-color:rgba(255,255,255,.35)}
.site-footer{
  background:#110e15;
  border-top:1px solid var(--line);
  padding:55px 0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.3fr repeat(2,.7fr);
  gap:42px;
}
.footer-title{color:var(--text);font-weight:800;margin-bottom:12px}
.footer-links{display:grid;gap:8px}
.footer-links a{color:var(--muted);font-size:14px;transition:.2s}
.footer-links a:hover{color:var(--lime)}
.site-footer p{font-size:14px;line-height:1.8}
.copyright{
  display:flex;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  border-top:1px solid var(--line);
  margin-top:38px;
  padding-top:18px;
  color:var(--muted-dark);
  font-size:12px;
}
.empty-state{
  padding:52px 28px;
  text-align:center;
  border:1px dashed rgba(200,240,74,.28);
  border-radius:var(--radius);
  background:rgba(33,26,43,.62);
}
.empty-state strong{display:block;color:var(--text);font-size:21px;margin-bottom:8px}
.empty-state p{margin-bottom:20px;font-size:14px}
@media (max-width:1024px){
  .nav a{padding-left:8px;padding-right:8px}
  .brand{max-width:210px;font-size:14px}
  .read-layout{grid-template-columns:minmax(0,1fr) 230px;gap:35px}
  .container{width:min(var(--container),calc(100% - 40px))}
}
@media (max-width:768px){
  .container{width:min(var(--container),calc(100% - 32px))}
  .nav-wrap{min-height:68px}
  .menu-toggle{display:block}
  .nav{
    display:none;
    position:absolute;
    left:16px;
    right:16px;
    top:68px;
    padding:12px;
    flex-direction:column;
    align-items:stretch;
    background:#211a2b;
    border:1px solid var(--line);
    border-radius:14px;
    box-shadow:var(--shadow);
  }
  .nav.open{display:flex}
  .nav a{padding:12px 14px}
  .nav-actions .btn-secondary{display:none}
  .nav-actions .btn{min-height:38px;padding:0 12px;font-size:13px}
  .brand{max-width:190px}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:15px}
  .section{padding:58px 0}
  .article-intro{padding:38px 0 34px}
  .article-header h1{font-size:36px}
  .article-lead{font-size:16px}
  .read-layout{display:block}
  .article-side{position:static;margin-top:38px}
  .side-card{margin-bottom:13px}
  .article-content{font-size:16px;line-height:1.86}
  .article-content h2{font-size:25px;margin-top:34px}
  .cta-box{display:block}
  .cta-actions{margin-top:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .footer-grid>div:first-child{grid-column:1/-1}
}
@media (max-width:520px){
  .container{width:calc(100% - 28px)}
  .brand{font-size:13px;max-width:155px}
  .brand-mark{width:32px;height:32px}
  .nav-actions .btn{padding:0 10px;font-size:12px}
  .article-header h1{font-size:31px}
  .article-meta{gap:8px 12px}
  .article-note{grid-template-columns:1fr;padding:21px}
  .article-note h3{margin-top:13px}
  .article-links .btn{width:100%}
  .cta-actions,.cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-grid>div:first-child{grid-column:auto}
  .copyright{display:block}
  .copyright span{display:block;margin-bottom:5px;overflow-wrap:anywhere}
}

/* roulang page: category2 */
:root{--bg:#17131d;--surface:#211a2b;--surface2:#2a2136;--purple:#8e3fa8;--lime:#c8f04a;--text:#f8f4fa;--muted:#b8afbf;--line:rgba(255,255,255,.12);--radius:18px;--shadow:0 20px 60px rgba(0,0,0,.28);--container:1240px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{line-height:1.25;letter-spacing:-.025em}
h1{font-size:clamp(36px,5vw,62px);font-weight:850}
h2{font-size:clamp(28px,3.5vw,40px);font-weight:800}
h3{font-size:20px;font-weight:800}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.section{padding:82px 0}
.eyebrow{display:inline-flex;gap:8px;align-items:center;color:var(--lime);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--lime)}
.section-head{max-width:720px;margin-bottom:35px}
.section-head p{color:var(--muted);margin-bottom:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 21px;border-radius:12px;border:1px solid transparent;font-weight:800;transition:.22s ease}
.btn:hover{transform:translateY(-2px);filter:brightness(1.07)}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(200,240,74,.55);outline-offset:3px}
.btn-primary{background:var(--lime);color:#19151e}
.btn-secondary{background:rgba(255,255,255,.04);border-color:var(--line)}
.tag{display:inline-flex;padding:4px 10px;border:1px solid rgba(200,240,74,.35);border-radius:99px;color:var(--lime);font-size:12px;font-weight:700}
.site-header{position:sticky;top:0;z-index:20;background:rgba(23,19,29,.84);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-size:16px;line-height:1.2;font-weight:900;max-width:250px}
.brand-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,var(--lime),#8ddd66);color:#211a2b;font-weight:1000;font-size:17px;flex:none}
.nav{display:flex;align-items:center;gap:3px}
.nav a{padding:8px 12px;color:var(--muted);font-size:14px;font-weight:700;border-radius:8px;transition:.2s}
.nav a:hover,.nav a.active{color:var(--text);background:rgba(255,255,255,.07)}
.nav a.active{box-shadow:inset 0 -2px var(--lime)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-actions .btn{min-height:40px;padding:0 15px;font-size:14px}
.menu-toggle{display:none;background:none;border:0;color:var(--text);font-size:24px}
.page-intro{position:relative;padding:76px 0 58px;border-bottom:1px solid var(--line);overflow:hidden}
.page-intro:after{content:"";position:absolute;width:420px;height:420px;right:4%;top:-220px;border-radius:50%;background:rgba(142,63,168,.26);filter:blur(5px);pointer-events:none}
.intro-layout{position:relative;z-index:1;display:flex;align-items:end;justify-content:space-between;gap:40px}
.intro-copy{max-width:760px}
.intro-copy p{max-width:680px;color:var(--muted);font-size:17px;margin-bottom:0}
.intro-mark{width:155px;height:155px;border:1px solid rgba(200,240,74,.3);border-radius:34px;display:grid;place-items:center;background:linear-gradient(145deg,var(--surface2),rgba(142,63,168,.36));transform:rotate(7deg);font-size:52px;font-weight:900;color:var(--lime)}
.info-strip{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:16px;background:var(--surface);overflow:hidden}
.info-item{padding:20px 24px;border-right:1px solid var(--line)}
.info-item:last-child{border-right:0}
.info-item strong{display:block;color:var(--lime);font-size:14px;margin-bottom:3px}
.info-item span{color:var(--muted);font-size:13px}
.news-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:52px;align-items:start}
.news-list{border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:116px minmax(0,1fr) auto;gap:22px;align-items:center;padding:24px 0;border-bottom:1px solid var(--line);transition:.22s}
.news-item:hover{padding-left:10px;border-color:rgba(200,240,74,.5)}
.news-date{color:var(--muted);font-size:13px}
.news-date b{display:block;color:var(--text);font-size:22px;line-height:1.2}
.news-content h3{margin:8px 0 5px}
.news-content p{color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:0}
.news-link{color:var(--lime);font-size:22px;font-weight:800;transition:.2s}
.news-item:hover .news-link{transform:translateX(4px)}
.side-note{border:1px solid var(--line);border-radius:18px;background:var(--surface);padding:24px;position:sticky;top:105px}
.side-note h3{margin:13px 0 8px}
.side-note p{color:var(--muted);font-size:14px}
.side-line{height:1px;background:var(--line);margin:20px 0}
.empty-state{padding:35px 0;color:var(--muted);border-bottom:1px solid var(--line)}
.focus-panel{display:grid;grid-template-columns:1.12fr .88fr;gap:18px}
.focus-main,.focus-card{border:1px solid var(--line);border-radius:18px;background:var(--surface);padding:30px}
.focus-main{background:linear-gradient(135deg,rgba(142,63,168,.68),var(--surface))}
.focus-main p,.focus-card p{color:var(--muted)}
.focus-card{background:var(--surface2)}
.focus-card strong{display:block;color:var(--lime);font-size:29px;margin-bottom:14px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
.step{position:relative;padding:25px;border:1px solid var(--line);border-radius:16px;background:#1c1723}
.step-number{color:var(--lime);font-size:13px;font-weight:900;letter-spacing:.1em}
.step h3{margin:12px 0 7px}
.step p{color:var(--muted);font-size:14px;margin-bottom:0}
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;padding:20px 0;background:none;border:0;color:var(--text);text-align:left;font-weight:800}
.faq-question span:last-child{color:var(--lime);font-size:22px;transition:.2s}
.faq-answer{display:none;padding:0 42px 20px 0;color:var(--muted);font-size:14px}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
.cta-band{padding:42px 48px;border-radius:22px;background:var(--lime);color:#1b1720;display:flex;align-items:center;justify-content:space-between;gap:28px}
.cta-band h2{margin-bottom:8px}
.cta-band p{margin-bottom:0;max-width:650px;color:#413c28}
.cta-band .btn-secondary{border-color:rgba(27,23,32,.35);color:#1b1720;background:transparent}
.site-footer{background:#110e15;border-top:1px solid var(--line);padding:55px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.3fr repeat(2,.7fr);gap:42px}
.footer-grid p{color:var(--muted)}
.footer-title{color:var(--text);font-weight:800;margin-bottom:12px}
.footer-links{display:grid;gap:8px}
.footer-links a{color:var(--muted);transition:.2s}
.footer-links a:hover{color:var(--lime)}
.copyright{display:flex;justify-content:space-between;gap:20px;color:#776d80;font-size:12px;border-top:1px solid var(--line);margin-top:38px;padding-top:20px}
@media(max-width:1024px){.nav a{padding:8px 8px}.nav-actions .btn-secondary{display:none}.news-layout{gap:28px}.intro-mark{width:125px;height:125px;font-size:42px}}
@media(max-width:768px){.container{width:min(var(--container),calc(100% - 32px))}.nav{display:none;position:absolute;left:16px;right:16px;top:70px;padding:12px;background:var(--surface);border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav.open{display:flex}.nav a{padding:12px 14px}.menu-toggle{display:block}.nav-wrap{height:70px}.brand{font-size:14px}.brand-mark{width:34px;height:34px}.nav-actions{margin-left:auto}.page-intro{padding:55px 0 45px}.intro-layout{display:block}.intro-mark{display:none}.section{padding:60px 0}.info-strip{grid-template-columns:repeat(2,1fr)}.info-item:nth-child(2){border-right:0}.info-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.news-layout,.focus-panel{grid-template-columns:1fr}.side-note{position:static}.news-item{grid-template-columns:78px minmax(0,1fr) auto;gap:13px}.news-content h3{font-size:17px}.steps{grid-template-columns:1fr}.cta-band{padding:30px 25px;display:block}.cta-band .btn{margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}}
@media(max-width:520px){h1{font-size:34px}.intro-copy p{font-size:15px}.info-item{padding:16px}.news-item{grid-template-columns:1fr auto}.news-date{grid-column:1/-1}.news-date b{display:inline;margin-right:8px;font-size:18px}.news-link{grid-column:2;grid-row:2}.focus-main,.focus-card{padding:23px}.copyright{display:block}.copyright span{display:block;margin-top:5px}}

/* roulang page: category4 */
:root{--bg:#17131d;--surface:#211a2b;--surface2:#2a2136;--purple:#8e3fa8;--lime:#c8f04a;--text:#f8f4fa;--muted:#b8afbf;--line:rgba(255,255,255,.12);--radius:18px;--shadow:0 20px 60px rgba(0,0,0,.28);--container:1240px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
h1,h2,h3,h4,p{margin-top:0}
h1,h2,h3,h4{line-height:1.25;letter-spacing:-.025em}
h1{font-size:clamp(36px,5vw,58px);font-weight:850}
h2{font-size:clamp(28px,3.5vw,40px);font-weight:800}
h3{font-size:20px;font-weight:800}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.section{padding:86px 0}
.eyebrow{display:inline-flex;gap:8px;align-items:center;color:var(--lime);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--lime)}
.section-head{max-width:700px;margin-bottom:36px}
.section-head p{color:var(--muted);margin-bottom:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 21px;border-radius:12px;border:1px solid transparent;font-weight:800;transition:.22s ease}
.btn:hover{transform:translateY(-2px);filter:brightness(1.07)}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(200,240,74,.55);outline-offset:3px}
.btn-primary{background:var(--lime);color:#19151e}
.btn-secondary{background:rgba(255,255,255,.04);border-color:var(--line)}
.tag{display:inline-flex;padding:4px 10px;border:1px solid rgba(200,240,74,.35);border-radius:99px;color:var(--lime);font-size:12px;font-weight:700}
.site-header{position:sticky;top:0;z-index:20;background:rgba(23,19,29,.86);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-size:16px;line-height:1.2;font-weight:900;max-width:250px}
.brand-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,var(--lime),#8ddd66);color:#211a2b;font-weight:1000;font-size:17px;flex:none}
.nav{display:flex;align-items:center;gap:3px}
.nav a{padding:8px 12px;color:var(--muted);font-size:14px;font-weight:700;border-radius:8px;transition:.2s}
.nav a:hover,.nav a.active{color:var(--text);background:rgba(255,255,255,.07)}
.nav a.active{box-shadow:inset 0 -2px var(--lime)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-actions .btn{min-height:40px;padding:0 15px;font-size:14px}
.menu-toggle{display:none;background:none;border:0;color:var(--text);font-size:24px}
.page-intro{position:relative;padding:82px 0 62px;border-bottom:1px solid var(--line);overflow:hidden}
.page-intro:after{content:"";position:absolute;width:520px;height:520px;right:-170px;top:-240px;border-radius:50%;background:radial-gradient(circle,rgba(142,63,168,.42),transparent 68%);pointer-events:none}
.intro-grid{display:grid;grid-template-columns:1fr .72fr;gap:70px;align-items:end;position:relative;z-index:1}
.page-intro p{max-width:690px;color:var(--muted);font-size:18px;margin-bottom:0}
.intro-note{border:1px solid var(--line);border-radius:18px;background:var(--surface);padding:23px}
.intro-note strong{display:block;color:var(--lime);font-size:24px;margin-bottom:5px}
.intro-note span{color:var(--muted);font-size:14px}
.service-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
.service-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:28px;transition:.22s}
.service-card:hover{transform:translateY(-4px);border-color:rgba(200,240,74,.55);box-shadow:0 16px 38px rgba(0,0,0,.18)}
.service-card.large{min-height:310px;background:linear-gradient(140deg,rgba(142,63,168,.72),rgba(33,26,43,.8))}
.service-card p{color:var(--muted);font-size:15px}
.card-list{display:grid;gap:12px}
.card-list .service-card{display:grid;grid-template-columns:50px 1fr auto;gap:18px;align-items:start;padding:21px 24px}
.icon-box{width:42px;height:42px;border-radius:13px;background:rgba(200,240,74,.12);color:var(--lime);display:grid;place-items:center;font-weight:900}
.service-card .arrow{color:var(--lime);font-size:22px}
.info-strip{display:flex;flex-wrap:wrap;gap:12px;padding:17px 20px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.035)}
.info-strip span{padding-right:18px;margin-right:6px;border-right:1px solid var(--line);color:var(--muted);font-size:14px}
.info-strip span:last-child{border:0}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.step{position:relative;padding:24px;background:var(--surface2);border:1px solid var(--line);border-radius:16px}
.step-number{color:var(--lime);font-size:13px;font-weight:900;letter-spacing:.08em}
.step p{color:var(--muted);font-size:14px;margin-bottom:0}
.feature-panel{display:grid;grid-template-columns:.75fr 1.25fr;gap:28px;align-items:stretch}
.feature-aside{padding:30px;border-radius:18px;background:var(--purple);display:flex;flex-direction:column;justify-content:space-between}
.feature-aside p{color:#f1e8f4}
.check-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.check-list li{padding:14px 18px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.check-list li:before{content:"✓";color:var(--lime);font-weight:900;margin-right:12px}
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;padding:21px 0;border:0;background:transparent;color:var(--text);font-weight:800}
.faq-question span{color:var(--lime);font-size:24px;transition:.2s}
.faq-answer{display:none;color:var(--muted);max-width:850px;padding:0 42px 20px 0}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-question span{transform:rotate(45deg)}
.cta-band{padding:39px 44px;border-radius:22px;background:linear-gradient(105deg,var(--purple),#53276b);display:flex;align-items:center;justify-content:space-between;gap:25px}
.cta-band p{color:#f2e9f5;margin:8px 0 0}
.site-footer{background:#110e15;border-top:1px solid var(--line);padding:55px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.3fr repeat(2,.7fr);gap:42px}
.footer-title{color:var(--text);font-weight:800;margin-bottom:12px}
.footer-links{display:grid;gap:8px}
.footer-links a{color:var(--muted);font-size:14px;transition:.2s}
.footer-links a:hover{color:var(--lime)}
.site-footer p{color:var(--muted);font-size:14px}
.copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:42px;padding-top:18px;color:#807688;font-size:12px}
@media(max-width:1024px){.intro-grid,.service-grid,.feature-panel{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr)}.nav{gap:0}.nav a{padding:8px 8px}.nav-actions .btn-secondary{display:none}}
@media(max-width:768px){.container{width:min(var(--container),calc(100% - 32px))}.nav-wrap{height:68px}.menu-toggle{display:block}.nav{display:none;position:absolute;top:68px;left:16px;right:16px;padding:12px;flex-direction:column;align-items:stretch;background:var(--surface);border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow)}.nav.open{display:flex}.nav a{padding:12px 14px}.brand{font-size:14px}.nav-actions{margin-left:auto}.nav-actions .btn{min-height:38px;padding:0 12px;font-size:13px}.page-intro{padding:60px 0 48px}.page-intro p{font-size:16px}.section{padding:60px 0}.card-list .service-card{grid-template-columns:42px 1fr auto;gap:12px;padding:18px}.cta-band{padding:30px 24px;display:block}.cta-band .btn{margin-top:20px;width:100%}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:5px}}
@media(max-width:520px){h1{font-size:34px}.intro-note{margin-top:8px}.steps{grid-template-columns:1fr}.info-strip{display:grid;gap:7px}.info-strip span{border:0;padding:0;margin:0}.service-card.large{min-height:260px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}}

/* roulang page: category3 */
:root{--bg:#17131d;--surface:#211a2b;--surface2:#2a2136;--purple:#8e3fa8;--lime:#c8f04a;--text:#f8f4fa;--muted:#b8afbf;--line:rgba(255,255,255,.12);--radius:18px;--shadow:0 20px 60px rgba(0,0,0,.28);--container:1240px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
h1,h2,h3,h4,p{margin-top:0}
h1,h2,h3,h4{line-height:1.28;letter-spacing:-.02em}
h1{font-size:clamp(36px,5vw,60px);font-weight:850}
h2{font-size:clamp(28px,3.2vw,40px);font-weight:800}
h3{font-size:20px;font-weight:800}
p{color:var(--muted)}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.section{padding:86px 0}
.eyebrow{display:inline-flex;gap:8px;align-items:center;color:var(--lime);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--lime)}
.section-head{max-width:720px;margin-bottom:36px}
.section-head p{margin-bottom:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 21px;border-radius:12px;border:1px solid transparent;font-weight:800;transition:.22s ease}
.btn:hover{transform:translateY(-2px);filter:brightness(1.07)}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(200,240,74,.55);outline-offset:3px}
.btn-primary{background:var(--lime);color:#19151e}
.btn-secondary{background:rgba(255,255,255,.04);border-color:var(--line)}
.tag{display:inline-flex;padding:4px 10px;border:1px solid rgba(200,240,74,.35);border-radius:99px;color:var(--lime);font-size:12px;font-weight:700}
.site-header{position:sticky;top:0;z-index:20;background:rgba(23,19,29,.86);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-size:16px;line-height:1.2;font-weight:900;max-width:250px}
.brand-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,var(--lime),#8ddd66);color:#211a2b;font-weight:1000;font-size:17px;flex:none}
.nav{display:flex;align-items:center;gap:3px}
.nav a{padding:8px 12px;color:var(--muted);font-size:14px;font-weight:700;border-radius:8px;transition:.2s}
.nav a:hover,.nav a.active{color:var(--text);background:rgba(255,255,255,.07)}
.nav a.active{box-shadow:inset 0 -2px var(--lime)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-actions .btn{min-height:40px;padding:0 15px;font-size:14px}
.menu-toggle{display:none;background:none;border:0;color:var(--text);font-size:24px}
.page-intro{position:relative;padding:74px 0 58px;border-bottom:1px solid var(--line);overflow:hidden}
.page-intro:after{content:"";position:absolute;right:8%;top:-160px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(142,63,168,.45),transparent 68%);pointer-events:none}
.intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:end;position:relative;z-index:1}
.page-intro h1{max-width:760px;margin:14px 0 17px}
.page-intro p{max-width:700px;font-size:17px;margin-bottom:0}
.intro-mark{justify-self:end;width:250px;height:180px;border:1px solid var(--line);border-radius:24px;background:var(--surface);padding:22px;box-shadow:var(--shadow);transform:rotate(-4deg)}
.intro-mark strong{display:block;color:var(--lime);font-size:44px;line-height:1;margin:22px 0 7px}
.info-strip{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:16px;background:var(--surface);overflow:hidden}
.info-cell{padding:20px 24px;border-right:1px solid var(--line)}
.info-cell:last-child{border-right:0}
.info-cell b{display:block;color:var(--lime);font-size:15px;margin-bottom:3px}
.info-cell span{color:var(--muted);font-size:13px}
.download-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:26px;align-items:stretch}
.download-card,.device-card,.feature-panel,.step-panel,.support-panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.download-card{padding:34px;display:flex;flex-direction:column;justify-content:space-between;min-height:355px}
.download-card h2{margin:16px 0 13px}
.download-card p{font-size:15px}
.download-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.device-card{padding:25px;position:relative;overflow:hidden;background:linear-gradient(145deg,var(--surface2),#1b1623)}
.device-card:before{content:"";position:absolute;width:230px;height:230px;right:-80px;top:-80px;border-radius:50%;background:rgba(200,240,74,.13)}
.device-top{display:flex;justify-content:space-between;align-items:center;position:relative;z-index:1}
.device-top small{color:var(--muted)}
.device-screen{max-width:300px;margin:29px auto 0;padding:13px;border:7px solid #0f0d14;border-radius:27px;background:#30243d;box-shadow:0 18px 35px rgba(0,0,0,.3);position:relative;z-index:1}
.screen-head{height:36px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--lime)}
.screen-banner{height:92px;border-radius:13px;margin:11px 0;background:linear-gradient(135deg,#a448b4,#54296d);padding:14px;font-size:14px;font-weight:800}
.screen-list{display:grid;gap:8px}
.screen-row{height:38px;border-radius:9px;background:rgba(255,255,255,.09);display:flex;align-items:center;padding:0 10px;font-size:12px;color:#e9e1ed}
.screen-row i{width:8px;height:8px;border-radius:50%;background:var(--lime);margin-right:8px}
.feature-panel{padding:29px}
.feature-panel h3{margin:15px 0 10px}
.feature-panel p{font-size:14px;margin-bottom:0}
.panel-label{color:var(--lime);font-size:12px;font-weight:800;letter-spacing:.06em}
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:22px}
.check-item{padding:18px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.025)}
.check-item b{display:block;margin-bottom:5px}
.check-item span{color:var(--muted);font-size:14px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.step-panel{padding:25px;min-height:185px}
.step-no{width:34px;height:34px;border-radius:10px;background:var(--lime);color:#211a2b;display:grid;place-items:center;font-weight:900;margin-bottom:23px}
.step-panel h3{margin-bottom:8px}
.step-panel p{font-size:14px;margin-bottom:0}
.notice{display:flex;gap:15px;align-items:flex-start;padding:21px 24px;border:1px solid rgba(200,240,74,.28);border-radius:15px;background:rgba(200,240,74,.06)}
.notice-icon{width:30px;height:30px;display:grid;place-items:center;border-radius:9px;background:var(--lime);color:#211a2b;font-weight:900;flex:none}
.notice p{font-size:14px;margin:0}
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:0}
.faq summary{list-style:none;cursor:pointer;padding:21px 4px;font-weight:800;display:flex;justify-content:space-between;gap:20px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--lime);font-size:23px;line-height:1}
.faq details[open] summary:after{content:"−"}
.faq details p{padding:0 40px 21px 4px;margin:0;font-size:14px}
.cta-band{padding:35px 38px;border-radius:22px;background:linear-gradient(105deg,var(--purple),#522765);display:flex;align-items:center;justify-content:space-between;gap:28px}
.cta-band h2{margin:0 0 8px;font-size:30px}
.cta-band p{margin:0;color:#eadff0}
.site-footer{background:#110e15;border-top:1px solid var(--line);padding:55px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.3fr repeat(2,.7fr);gap:42px}
.footer-title{color:var(--text);font-weight:800;margin-bottom:12px}
.footer-links{display:grid;gap:8px}
.footer-links a{color:var(--muted);font-size:14px;transition:.2s}
.footer-links a:hover{color:var(--lime)}
.copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:38px;padding-top:20px;color:#827889;font-size:12px}
@media(max-width:1024px){
 .nav{gap:0}.nav a{padding:8px 8px;font-size:13px}.intro-grid{gap:30px}.download-layout{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
 .container{width:min(var(--container),calc(100% - 32px))}
 .nav-wrap{height:68px}.brand{font-size:14px;max-width:190px}.brand-mark{width:34px;height:34px}
 .menu-toggle{display:block}.nav{display:none;position:absolute;left:16px;right:16px;top:76px;padding:10px;flex-direction:column;align-items:stretch;background:#211a2b;border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow)}
 .nav.open{display:flex}.nav a{padding:12px 14px}.nav-actions .btn-secondary{display:none}.nav-actions .btn{min-height:38px;padding:0 12px;font-size:13px}
 .page-intro{padding:58px 0 42px}.intro-grid{grid-template-columns:1fr}.intro-mark{justify-self:start;width:220px;height:145px}.intro-mark strong{font-size:35px;margin:14px 0 5px}
 .section{padding:58px 0}.info-strip{grid-template-columns:repeat(2,1fr)}.info-cell:nth-child(2){border-right:0}.info-cell:nth-child(-n+2){border-bottom:1px solid var(--line)}
 .download-layout{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.cta-band{display:block;padding:28px 24px}.cta-band .btn{margin-top:22px;width:100%}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}
}
@media(max-width:520px){
 h1{font-size:34px}.page-intro h1{font-size:34px}.page-intro p{font-size:15px}
 .info-cell{padding:16px 14px}.info-cell span{font-size:12px}.download-card,.device-card,.feature-panel{padding:23px}
 .check-grid{grid-template-columns:1fr}.download-actions{display:grid}.download-actions .btn{width:100%}
 .device-screen{max-width:265px}.copyright{display:block}.copyright span{display:block;margin-bottom:5px}.footer-grid{grid-template-columns:1fr}
}