/* roulang page: index */
:root{--ink:#17213b;--muted:#68738c;--line:#e7eaf2;--bg:#f7f9fc;--card:#fff;--violet:#6748ee;--cyan:#17b9c8;--orange:#ff8b48;--radius:22px;--shadow:0 18px 45px rgba(34,42,78,.09)}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--bg);font:16px/1.75 Arial,"Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}button{font:inherit;border:0;cursor:pointer}img{max-width:100%;display:block}.container{width:min(1160px,92%);margin:auto}.topline{height:5px;background:linear-gradient(90deg,var(--violet),var(--cyan),var(--orange))}.header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.nav{height:76px;display:flex;align-items:center;gap:35px}.logo{font-weight:900;font-size:20px;letter-spacing:-1px;color:var(--violet);white-space:nowrap}.links{display:flex;gap:25px;margin-left:auto}.links a{color:var(--muted);font-weight:700;padding:8px}.links a:hover,.links a.active{color:var(--violet)}.nav-cta,.primary{background:var(--violet);color:#fff;border-radius:12px;padding:12px 19px;font-weight:800;box-shadow:0 9px 20px #6748ee2e}.nav-cta:hover,.primary:hover{transform:translateY(-2px);background:#5134d7}.menu{display:none;background:none;font-size:25px}.hero{background:#fff;padding:48px 0 42px;border-bottom:1px solid var(--line)}.hero-strip{display:flex;align-items:center;justify-content:space-between;gap:35px;padding:35px 42px;border-radius:28px;background:linear-gradient(105deg,#f0edff,#e9fbfc 65%,#fff4e9);overflow:hidden}.hero h1{font-size:clamp(34px,5vw,62px);line-height:1.15;margin:12px 0 18px;letter-spacing:-2px}.hero p{max-width:690px;color:var(--muted);font-size:17px;margin:0}.eyebrow,.badge{color:var(--violet);font-size:13px;font-weight:900;letter-spacing:1px}.hero-stat{display:flex;gap:15px;flex-wrap:wrap}.stat{background:#fff;border:1px solid #ffffffaa;border-radius:18px;padding:17px 20px;min-width:125px;box-shadow:var(--shadow)}.stat strong{display:block;font-size:28px}.actions{display:flex;gap:12px;margin-top:25px}.secondary{border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px 19px;font-weight:800}.secondary:hover{border-color:var(--violet);color:var(--violet)}main section{padding:76px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:27px}.section-head h2{font-size:31px;line-height:1.25;margin:6px 0}.section-head p{color:var(--muted);max-width:620px;margin:0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:19px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:0 8px 25px #222a4e05;transition:.25s}.card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.card h3{margin:12px 0 8px;font-size:20px}.card p{color:var(--muted);margin:0}.icon{width:45px;height:45px;display:grid;place-items:center;border-radius:14px;background:#eeeaff;color:var(--violet);font-size:22px}.dark{background:#18213e;color:#fff}.dark .section-head p,.dark p{color:#b8c1dc}.dark .card{background:#222c4b;border-color:#35405e}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#35405e;border-radius:18px;overflow:hidden}.metric{padding:25px;background:#222c4b}.metric strong{font-size:34px;color:#fff;display:block}.metric span{color:#aeb8d1}.wide{grid-column:span 2}.list{display:grid;gap:12px}.list-item{display:flex;justify-content:space-between;gap:20px;padding:17px 20px;background:#fff;border:1px solid var(--line);border-radius:15px}.list-item b{font-size:16px}.list-item span{color:var(--muted);font-size:14px}.steps{counter-reset:step}.step{position:relative;padding-left:60px}.step:before{counter-increment:step;content:counter(step);position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;color:#fff;background:var(--violet);font-weight:900}.quote{border-left:4px solid var(--cyan);background:#fff;border-radius:0 18px 18px 0;padding:22px 26px}.quote p{margin:0 0 8px}.tag{display:inline-block;background:#fff0e7;color:#d96a2f;border-radius:20px;padding:4px 10px;font-size:12px;font-weight:800}.cta{background:linear-gradient(110deg,var(--violet),#8d6cff);color:#fff;border-radius:28px;padding:42px}.cta h2{margin:0 0 10px;font-size:34px}.cta p{color:#e8e4ff;max-width:670px}.cta .primary{background:#fff;color:var(--violet);box-shadow:none}.footer{background:#141a31;color:#aeb8d1;padding:42px 0 25px}.footer-row{display:flex;justify-content:space-between;gap:25px}.footer .logo{color:#fff}.footer a:hover{color:#fff}.copyright{border-top:1px solid #303951;margin-top:28px;padding-top:18px;font-size:13px}@media(max-width:768px){.links,.nav-cta{display:none}.menu{display:block;margin-left:auto}.hero-strip{padding:28px 22px;display:block}.hero-stat{margin-top:25px}.grid{grid-template-columns:1fr 1fr}.metrics{grid-template-columns:1fr 1fr}.wide{grid-column:span 1}.section-head{display:block}.footer-row{display:block}.footer-row>div{margin-bottom:20px}}@media(max-width:520px){.nav{height:65px}.logo{font-size:17px}.grid,.metrics{grid-template-columns:1fr}.hero h1{font-size:39px}.hero p{font-size:15px}.actions{flex-direction:column}.actions a{text-align:center}.section-head h2{font-size:26px}main section{padding:55px 0}.list-item{display:block}.list-item span{display:block;margin-top:4px}}

/* roulang page: category1 */
:root{--ink:#17213b;--muted:#68738c;--line:#e7eaf2;--bg:#f7f9fc;--card:#fff;--violet:#6748ee;--cyan:#17b9c8;--orange:#ff8b48;--radius:22px;--shadow:0 18px 45px rgba(34,42,78,.09)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--bg);font:16px/1.75 Arial,"Microsoft YaHei",sans-serif}
a{color:inherit;text-decoration:none}
button{font:inherit;border:0;cursor:pointer}
img{max-width:100%;display:block}
.container{width:min(1160px,92%);margin:auto}
.header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.nav{height:76px;display:flex;align-items:center;gap:35px}
.logo{font-weight:900;font-size:20px;letter-spacing:-1px;color:var(--violet);white-space:nowrap}
.links{display:flex;align-items:center;gap:11px}
.links a{color:var(--muted);font-weight:700;padding:8px}
.links a:hover,.links a.active{color:var(--violet)}
.nav-cta,.primary{background:var(--violet);color:#fff;border-radius:12px;padding:12px 19px;font-weight:800;box-shadow:0 9px 20px #6748ee2e;transition:.25s}
.nav-cta{margin-left:auto}
.nav-cta:hover,.primary:hover{transform:translateY(-2px);background:#5134d7}
.menu{display:none;background:none;font-size:25px;color:var(--ink)}
.hero{background:#fff;padding:48px 0 42px;border-bottom:1px solid var(--line)}
.hero-strip{display:flex;align-items:center;justify-content:space-between;gap:35px;padding:40px 42px;border-radius:28px;background:linear-gradient(105deg,#f0edff,#e9fbfc 65%,#fff4e9);overflow:hidden}
.hero-copy{max-width:710px}
.eyebrow,.badge{color:var(--violet);font-size:13px;font-weight:900;letter-spacing:1px}
.hero h1{font-size:clamp(34px,5vw,62px);line-height:1.15;margin:12px 0 18px;letter-spacing:-2px}
.hero p{max-width:690px;color:var(--muted);font-size:17px;margin:0}
.hero-stat{display:flex;gap:15px;flex-wrap:wrap;margin-top:28px}
.stat{min-width:130px;background:rgba(255,255,255,.75);border:1px solid rgba(255,255,255,.9);border-radius:16px;padding:13px 16px}
.stat strong{display:block;font-size:25px;line-height:1.2;color:var(--ink)}
.stat span{font-size:12px;color:var(--muted)}
.hero-panel{width:290px;background:#17213b;color:#fff;border-radius:20px;padding:23px;box-shadow:0 20px 35px rgba(23,33,59,.18)}
.panel-top{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:#bbc5df}
.signal{width:9px;height:9px;border-radius:50%;background:#35dfb4;display:inline-block;margin-right:6px}
.panel-score{display:flex;justify-content:space-between;align-items:center;margin:25px 0}
.panel-score b{font-size:31px}
.panel-score em{font-style:normal;color:#ffad75;font-size:13px}
.panel-line{height:7px;border-radius:10px;background:#35405e;overflow:hidden}
.panel-line i{display:block;width:72%;height:100%;background:linear-gradient(90deg,var(--cyan),#8d6cff);border-radius:10px}
main section{padding:76px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:27px}
.section-head h2{font-size:31px;line-height:1.25;margin:6px 0}
.section-head p{color:var(--muted);max-width:620px;margin:0}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.metric{background:#fff;border:1px solid var(--line);border-radius:18px;padding:23px;position:relative;overflow:hidden}
.metric:after{content:"";position:absolute;width:70px;height:70px;border-radius:50%;right:-25px;top:-25px;background:#f0edff}
.metric strong{font-size:30px;display:block;color:var(--violet)}
.metric b{display:block;margin:5px 0}
.metric span{color:var(--muted);font-size:13px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:stretch}
.dark{background:#17213b;color:#fff}
.dark .section-head p,.dark p{color:#b8c1dc}
.dark-box{border-radius:26px;padding:40px;background:#202b4b;min-height:310px}
.dark-box h2{font-size:32px;line-height:1.3;margin:10px 0 14px}
.data-list{display:grid;gap:13px;margin-top:25px}
.data-row{display:flex;justify-content:space-between;gap:15px;border-bottom:1px solid #35405e;padding-bottom:11px;color:#dbe2f4}
.data-row span{color:#8e9bbb}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:0 8px 25px #222a4e05;transition:.25s}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.card h3{margin:12px 0 8px;font-size:20px}
.card p{color:var(--muted);margin:0}
.scenes{display:grid;grid-template-columns:1.15fr .85fr;gap:20px}
.scene-large{background:linear-gradient(135deg,#6748ee,#8d6cff);color:#fff;border-radius:24px;padding:32px;min-height:260px;display:flex;flex-direction:column;justify-content:end}
.scene-large p{color:#e8e4ff;max-width:520px}
.scene-stack{display:grid;gap:20px}
.scene-small{background:#fff;border:1px solid var(--line);border-radius:20px;padding:23px}
.scene-small h3{margin:0 0 7px}
.scene-small p{color:var(--muted);margin:0}
.list{display:grid;gap:12px}
.list-item{display:flex;justify-content:space-between;gap:20px;padding:17px 20px;background:#fff;border:1px solid var(--line);border-radius:15px;transition:.2s}
.list-item:hover{border-color:#c9c0ff;box-shadow:0 8px 20px #222a4e08}
.list-item b{font-size:16px}
.list-item span{color:var(--muted);font-size:14px}
.tag{display:inline-block;background:#fff0e7;color:#d96a2f;border-radius:20px;padding:4px 10px;font-size:12px;font-weight:800}
.faq{display:grid;grid-template-columns:.8fr 1.2fr;gap:35px;align-items:start}
.faq h2{font-size:32px;line-height:1.3;margin:5px 0 12px}
.faq-intro{color:var(--muted)}
.faq-list{display:grid;gap:12px}
details{background:#fff;border:1px solid var(--line);border-radius:15px;padding:17px 20px}
summary{font-weight:800;cursor:pointer}
details p{color:var(--muted);margin:12px 0 0}
.cta{background:linear-gradient(110deg,var(--violet),#8d6cff);color:#fff;border-radius:28px;padding:42px}
.cta h2{margin:0 0 10px;font-size:34px}
.cta p{color:#e8e4ff;max-width:670px}
.cta .primary{background:#fff;color:var(--violet);box-shadow:none}
.footer{background:#141a31;color:#aeb8d1;padding:42px 0 25px}
.footer-row{display:flex;justify-content:space-between;gap:25px}
.footer .logo{color:#fff}
.footer p{margin:12px 0 0}
.footer a:hover{color:#fff}
.copyright{border-top:1px solid #303951;margin-top:28px;padding-top:18px;font-size:13px}
:focus-visible{outline:3px solid #ffad75;outline-offset:3px}
@media(max-width:900px){
  .hero-strip{display:block}
  .hero-panel{width:100%;margin-top:28px}
  .metrics{grid-template-columns:1fr 1fr}
  .scenes,.faq{grid-template-columns:1fr}
}
@media(max-width:768px){
  .links,.nav-cta{display:none}
  .menu{display:block;margin-left:auto}
  .nav{height:65px}
  .hero-strip{padding:28px 22px}
  .hero h1{font-size:39px}
  .hero p{font-size:15px}
  .split{grid-template-columns:1fr}
  .section-head{display:block}
  .footer-row{display:block}
  .footer-row>div{margin-bottom:20px}
}
@media(max-width:520px){
  .logo{font-size:17px}
  .metrics{grid-template-columns:1fr}
  .hero-stat{gap:9px}
  .stat{flex:1;min-width:110px}
  .section-head h2,.faq h2{font-size:26px}
  main section{padding:55px 0}
  .list-item{display:block}
  .list-item span{display:block;margin-top:4px}
  .actions{display:flex;flex-direction:column}
  .actions a{text-align:center}
  .cta{padding:30px 24px}
}