/* roulang page: index */
:root{
  --bg:#161018;
  --surface:#241c2b;
  --surface-2:#2e2436;
  --primary:#9b4dca;
  --magenta:#d63a86;
  --accent:#f0b56a;
  --vine:#e6d38a;
  --neon:#ff5fa8;
  --text:#f7f1ea;
  --muted:#b7a8bc;
  --link:#f0b56a;
  --border:rgba(176,140,186,.28);
  --radius-lg:24px;
  --radius:16px;
  --radius-btn:12px;
  --shadow:0 12px 28px rgba(74,32,84,.28);
  --container:1120px;
  --section-pad:64px;
  --grad:linear-gradient(120deg,#8e44c4 0%,#d63a86 46%,#f0b56a 100%);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  padding-bottom:88px;
}
img{max-width:100%;display:block}
a{color:var(--link);text-decoration:none}
a:not(.btn):not(.logo):not(.chip):not(.cloud-link):not(.text-link):hover{
  text-decoration:underline;
  text-decoration-color:rgba(240,181,106,.85);
  text-underline-offset:3px;
}
button,input{font-family:inherit}
h1,h2,h3{font-weight:700;line-height:1.35;margin:0 0 12px}
p{margin:0 0 12px}
ul{margin:0;padding:0;list-style:none}
::selection{background:#d63a86;color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:50;
  background:#161018;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--grad);
}
.nav-bar{
  position:relative;
  display:flex;align-items:center;gap:16px;
  min-height:74px;
}
.logo{
  font-size:16px;font-weight:700;line-height:1.3;max-width:18em;
  color:var(--accent);
}
@supports(-webkit-background-clip:text){
  .logo,.brand-kicker{
    background:var(--grad);
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }
}
.nav-links{
  display:flex;align-items:center;gap:4px;margin-left:auto;
}
.nav-links a{
  position:relative;color:var(--text);padding:10px 12px;border-radius:12px;
}
.nav-links a:not(.btn):hover{
  color:#fff;filter:brightness(1.15);text-decoration:none;
}
.nav-links a.active{
  color:var(--accent);
  text-shadow:0 0 12px rgba(240,181,106,.65);
}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(120deg,#d63a86,#f0b56a);
}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;margin-left:auto;
  background:transparent;color:var(--accent);
  border:1px solid var(--magenta);border-radius:12px;
  min-height:40px;padding:0 14px;cursor:pointer;
}
.nav-toggle:hover{background:rgba(155,77,202,.12)}
.nav-toggle:active{transform:translateY(1px)}
main>section{padding:var(--section-pad) 0}
main>section:nth-child(even){background:var(--surface)}
main>section:nth-child(odd){background:var(--bg)}
.hero{
  background:
    radial-gradient(880px 380px at 88% 0%,rgba(214,58,134,.2),transparent 62%),
    var(--bg);
}
.section-head{margin-bottom:28px}
.section-head p{margin:0;color:var(--muted);max-width:70ch}
.section-head.split{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;align-items:end;
}
.hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;
}
.brand-kicker{font-weight:700;font-size:15px;margin-bottom:10px;color:var(--accent)}
h1{font-size:clamp(32px,4vw,46px)}
h2{font-size:28px}
h3{font-size:18px}
.hero-sub{font-size:18px;color:var(--vine);margin-bottom:12px}
.hero-lead{color:var(--text)}
.hero-actions,.closing-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:18px 0}
.badge-row{display:flex;flex-wrap:wrap;gap:10px}
.stat-badge,.badge{
  display:inline-flex;align-items:center;gap:8px;
  border-radius:999px;padding:6px 12px;
  background:var(--surface-2);border:1px solid var(--border);
  color:var(--vine);font-size:14px;line-height:1.4;
}
.dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--grad);box-shadow:0 0 8px rgba(214,58,134,.8);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:46px;padding:0 18px;border-radius:var(--radius-btn);
  font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,filter .2s ease,background .2s ease,border-color .2s ease;
}
.btn-primary{
  background:var(--grad);color:#fff;
  box-shadow:0 8px 18px rgba(214,58,134,.28);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);text-decoration:none}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{
  background:transparent;color:var(--accent);border-color:var(--neon);
}
.btn-ghost:hover{background:rgba(155,77,202,.12);text-decoration:none}
.btn-ghost:active{transform:translateY(1px)}
.text-link{
  color:var(--vine);font-weight:700;
  border-bottom:1px solid rgba(230,211,138,.55);padding-bottom:2px;
}
.text-link:hover{
  color:var(--accent);text-decoration:none;
  text-shadow:0 0 12px rgba(240,181,106,.45);
}
.hero-visual{display:flex;flex-direction:column;gap:14px}
.hero-cover{position:relative}
.ph{
  aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;
  background:#2a2233;border:1px solid var(--border);
}
.ph.lg{border-radius:var(--radius-lg)}
.ph img{width:100%;height:100%;object-fit:cover}
.ring{
  position:absolute;right:14px;bottom:14px;
  width:112px;height:112px;border-radius:50%;
  background:conic-gradient(#d63a86 calc(var(--p)*1%),rgba(255,255,255,.14) 0);
  display:grid;place-items:center;padding:8px;
  box-shadow:var(--shadow);
}
.ring div{
  width:100%;height:100%;border-radius:50%;background:#221825;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
}
.ring strong{font-size:28px;line-height:1;color:var(--accent)}
.ring span{font-size:12px;color:var(--muted)}
.tier{display:grid;gap:8px}
.tier li{
  display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:center;
  background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:10px 12px;
}
.tag{
  display:inline-flex;align-items:center;border-radius:999px;
  padding:2px 10px;background:rgba(214,58,134,.16);color:var(--vine);font-size:13px;
}
.sell-grid{
  display:grid;grid-template-columns:1.4fr .86fr 1.12fr;gap:18px;align-items:stretch;
}
.sell-card,.entry-card,.floor,.stack-card,.scene-card,.review,.step,.side{
  background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:22px;box-shadow:0 0 0 rgba(0,0,0,0);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.floor,.step,.review{border-radius:var(--radius)}
.sell-card:nth-child(1){min-height:300px}
.sell-card:nth-child(2){min-height:230px;align-self:end;border-radius:28px}
.sell-card:nth-child(3){min-height:260px}
.sell-card:hover,.entry-card:hover,.floor:hover,.stack-card:hover,.scene-card:hover,.review:hover,.step:hover{
  transform:translateY(-3px);border-color:rgba(214,58,134,.5);box-shadow:var(--shadow);
}
.card-kicker{color:var(--accent);font-size:13px;margin-bottom:8px}
.card-text{color:var(--muted);margin:0}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step-no{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  background:var(--grad);color:#fff;font-weight:700;margin-bottom:12px;
}
.step-thumb{margin-bottom:12px}
.proof-layout{display:grid;gap:18px}
.badge-wall{display:flex;flex-wrap:wrap;gap:12px}
.badge-wall .stat-badge{padding:10px 16px;font-size:16px}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.review{display:block;color:var(--text)}
.review:hover{text-decoration:none}
.review p{margin:0;color:var(--text)}
.review span{display:block;margin-top:10px;color:var(--muted);font-size:14px}
.entry-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
.entry-card h3{font-size:26px}
.floor-list{display:flex;flex-direction:column;gap:14px}
.floor{
  display:grid;grid-template-columns:240px 1fr;gap:16px;align-items:center;padding:14px;
}
.floor h3{margin-bottom:6px}
.floor h3 a{color:var(--text)}
.floor h3 a:hover{color:var(--accent);text-decoration:none}
.meta-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:8px}
.stack-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
.stack-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.stack-card .ph{border:0;border-radius:0}
.stack-body{padding:18px 20px 22px}
.stack-card.span{grid-column:1/-1;display:grid;grid-template-columns:1.1fr .9fr}
.stack-card.span .ph{min-height:100%}
.versus{display:flex;flex-direction:column;gap:12px}
.versus-row{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:stretch}
.side h3{font-size:16px;margin-bottom:6px}
.side p{margin:0;color:var(--muted)}
.mid{
  min-width:132px;border-radius:999px;display:flex;align-items:center;justify-content:center;
  padding:12px;background:var(--grad);color:#fff;font-weight:700;text-align:center;
}
.timeline{margin-left:8px;border-left:2px solid rgba(214,58,134,.45)}
.time-item{position:relative;padding:0 0 22px 22px}
.time-item::before{
  content:"";width:10px;height:10px;border-radius:50%;background:var(--accent);
  position:absolute;left:-6px;top:8px;box-shadow:0 0 0 4px rgba(240,181,106,.16);
}
.time-date{color:var(--accent);font-size:14px}
.scene-chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.chip,.cloud-link{
  display:inline-flex;align-items:center;border-radius:999px;
  padding:8px 14px;border:1px solid var(--border);color:var(--accent);background:transparent;
}
.chip:hover,.cloud-link:hover{
  background:rgba(155,77,202,.12);text-decoration:none;color:var(--vine);
}
.scene-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:16px}
.scene-card h3{margin-top:12px}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{
  background:var(--surface-2);border:1px solid var(--border);border-radius:16px;padding:0 16px;
}
.faq-item summary{
  list-style:none;cursor:pointer;font-weight:700;padding:14px 0;position:relative;padding-right:28px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:0;top:12px;color:var(--accent);font-size:22px;line-height:1;
}
.faq-item[open] summary::after{content:"–"}
.faq-item[open]{background:#2a2233}
.faq-item p{color:var(--muted);margin:0 0 14px}
.assure-bar{
  display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:8px;
}
.assure-item{
  display:flex;gap:12px;align-items:center;
  border:1px solid var(--border);border-radius:999px;padding:12px 16px;background:var(--surface-2);
}
.assure-ico{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;flex:0 0 auto;
  background:var(--grad);color:#fff;font-weight:700;
}
.assure-item strong{display:block;line-height:1.3}
.assure-item span{color:var(--muted);font-size:13px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.closing{
  background:
    radial-gradient(700px 240px at 10% 0%,rgba(142,68,196,.25),transparent 60%),
    var(--surface);
}
.site-footer{
  position:relative;background:#120e16;padding:48px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad);
}
.foot-grid{display:grid;grid-template-columns:1.3fr .8fr 1fr;gap:24px}
.foot-links{display:flex;flex-direction:column;gap:8px}
.foot-links a{color:var(--vine)}
.foot-note,.copy-line{color:var(--muted)}
.copy-line{margin-top:22px;padding-top:16px;border-top:1px solid var(--border)}
.dock{
  position:fixed;left:0;right:0;bottom:0;z-index:40;
  background:#120e16;border-top:1px solid rgba(214,58,134,.45);
  box-shadow:0 -8px 24px rgba(40,16,50,.35);
}
.dock-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:64px}
.dock p{margin:0;color:var(--vine)}
@media(max-width:1024px){
  :root{--section-pad:40px}
  .hero-grid,.section-head.split,.entry-grid,.stack-grid,.scene-grid,.foot-grid{grid-template-columns:1fr 1fr}
  .sell-grid{grid-template-columns:1fr 1fr}
  .sell-card:last-child{grid-column:1/-1}
  .stack-card.span{grid-template-columns:1fr 1fr}
  .review-grid{grid-template-columns:1fr 1fr}
  .review-grid .review:last-child{grid-column:1/-1}
}
@media(max-width:768px){
  :root{--section-pad:28px}
  .nav-toggle{display:inline-flex}
  .nav-links{
    display:none;position:absolute;top:100%;left:0;right:0;z-index:60;
    flex-direction:column;align-items:stretch;margin-left:0;
    background:#161018;padding:12px 16px 18px;
    border-bottom:1px solid rgba(214,58,134,.45);
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px}
  .nav-cta{margin:8px 0 0}
  .hero-grid,.section-head.split,.entry-grid,.steps,.review-grid,.stack-grid,.scene-grid,.versus-row,.assure-bar,.foot-grid,.sell-grid{
    grid-template-columns:1fr;
  }
  .sell-card:last-child,.review-grid .review:last-child,.stack-card.span{grid-column:auto}
  .stack-card.span{grid-template-columns:1fr}
  .floor{grid-template-columns:1fr}
  .mid{min-height:52px}
}
@media(max-width:520px){
  body{padding-bottom:128px}
  .container{width:min(var(--container),calc(100% - 28px))}
  .logo{font-size:13px;max-width:12em}
  .btn,.nav-cta{width:100%}
  .hero-actions,.closing-actions{flex-direction:column;align-items:stretch}
  .dock-inner{flex-direction:column;align-items:stretch;padding:10px 0 12px;min-height:96px}
  .ring{width:92px;height:92px;right:8px;bottom:8px}
  .ring strong{font-size:22px}
  h2{font-size:24px}
}
@media(max-width:480px){
  .assure-item{border-radius:16px}
}

/* roulang page: category1 */
:root{
 --bg:#161018;
 --surface:#241c2b;
 --surface-2:#2e2436;
 --primary:#9b4dca;
 --magenta:#d63a86;
 --accent:#f0b56a;
 --vine:#e6d38a;
 --neon:#ff5fa8;
 --text:#f7f1ea;
 --muted:#b7a8bc;
 --link:#f0b56a;
 --border:rgba(176,140,186,.28);
 --radius-lg:24px;
 --radius:16px;
 --radius-btn:12px;
 --shadow:0 12px 28px rgba(74,32,84,.28);
 --container:1120px;
 --section-pad:64px;
 --grad:linear-gradient(120deg,#8e44c4 0%,#d63a86 46%,#f0b56a 100%);
}
/* roulang page: category1 */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
 font-size:16px;
 line-height:1.75;
 color:var(--text);
 background:var(--bg);
 padding-bottom:92px;
}
img{max-width:100%;display:block}
a{color:var(--link);text-decoration:none}
a:not(.btn):not(.logo):not(.chip):not(.cloud-link):not(.text-link):hover{
 text-decoration:underline;
 text-decoration-color:rgba(240,181,106,.85);
 text-underline-offset:3px;
}
button,input{font-family:inherit}
h1,h2,h3,p{margin:0}
h1{font-size:40px;line-height:1.25;font-weight:700;letter-spacing:.01em}
h2{font-size:30px;line-height:1.3;font-weight:700}
h3{font-size:20px;line-height:1.4;font-weight:700}
.container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:#161018}
.site-header::after{
 content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--grad);
}
.nav-bar{position:relative;display:flex;align-items:center;gap:16px;min-height:74px}
.logo{font-size:16px;font-weight:700;line-height:1.3;max-width:18em;color:var(--accent)}
.logo,.brand-kicker{
 background:var(--grad);
 -webkit-background-clip:text;
 background-clip:text;
 color:transparent;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{position:relative;color:var(--text);padding:10px 12px;border-radius:12px}
.nav-links a:not(.btn):hover{color:#fff;filter:brightness(1.15);text-decoration:none}
.nav-links a.active{color:var(--accent);text-shadow:0 0 12px rgba(240,181,106,.65)}
.nav-links a.active::after{
 content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
 background:linear-gradient(120deg,#d63a86,#f0b56a);
}
.nav-cta{margin-left:8px}
.nav-toggle{
 display:none;margin-left:auto;background:transparent;color:var(--accent);
 border:1px solid var(--magenta);border-radius:12px;min-height:40px;padding:0 14px;cursor:pointer;
}
.nav-toggle:hover{background:rgba(155,77,202,.12)}
.nav-toggle:active{transform:translateY(1px)}
.nav-toggle:focus-visible,.btn:focus-visible,.chip:focus-visible,a:focus-visible{
 outline:2px solid var(--accent);outline-offset:2px;
}
main>section{padding:var(--section-pad) 0}
main>section:nth-child(even){background:var(--surface)}
main>section:nth-child(odd){background:var(--bg)}
.section-head{margin-bottom:28px}
.section-head p{margin-top:8px;color:var(--muted);max-width:68ch}
.section-head.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;align-items:end}
.brand-kicker{font-weight:700;font-size:15px;margin-bottom:10px}
.btn{
 display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;
 border-radius:var(--radius-btn);font-weight:700;border:1px solid transparent;cursor:pointer;
 transition:transform .2s ease,filter .2s ease,background .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 18px rgba(214,58,134,.28)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);text-decoration:none}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:transparent;color:var(--accent);border-color:var(--neon)}
.btn-ghost:hover{background:rgba(155,77,202,.12);text-decoration:none}
.btn-ghost:active{transform:translateY(1px)}
.text-link{color:var(--vine);font-weight:700;border-bottom:1px solid rgba(230,211,138,.55);padding-bottom:2px}
.text-link:hover{color:var(--accent);text-decoration:none;text-shadow:0 0 12px rgba(240,181,106,.45)}
.stat-badge,.badge,.tag{
 display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:6px 12px;
 background:var(--surface-2);border:1px solid var(--border);color:var(--vine);font-size:14px;line-height:1.4;
}
.tag{padding:2px 10px;background:rgba(214,58,134,.16);font-size:13px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px rgba(255,95,168,.8)}
.cat-top{background:radial-gradient(760px 280px at 92% 0%,rgba(214,58,134,.2),transparent 64%),var(--bg)}
.crumb{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:14px;margin-bottom:14px}
.crumb a{color:var(--vine)}
.cat-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}
.cat-lead{margin-top:12px;color:var(--muted);max-width:62ch}
.heat-panel{
 background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-lg);
 padding:22px;box-shadow:var(--shadow);
}
.heat-panel strong{display:block;font-size:34px;line-height:1.1;margin:8px 0;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.heat-panel p{color:var(--muted)}
.floor-list{display:flex;flex-direction:column;gap:14px}
.floor{
 display:grid;grid-template-columns:188px 1fr;gap:18px;align-items:center;
 background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-lg);
 padding:16px;box-shadow:0 0 0 rgba(0,0,0,0);
 transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.floor:hover{transform:translateY(-3px);border-color:rgba(214,58,134,.5);box-shadow:var(--shadow)}
.floor[hidden]{display:none}
.ph{
 position:relative;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;
 background:linear-gradient(120deg,#6d3494 0%,#b43378 48%,#e0b16a 100%);
}
.ph::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,transparent 40%,rgba(22,16,24,.72));
}
.ph span{
 position:absolute;left:10px;bottom:8px;z-index:1;color:#fff;font-size:13px;font-weight:700;
}
.floor-body h3 a{color:var(--text)}
.floor-body h3 a:hover{color:var(--accent);text-decoration:none}
.floor-no{color:var(--accent);font-size:13px;font-weight:700;letter-spacing:.08em}
.card-text{
 color:var(--muted);margin-top:6px;
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.meta-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:10px}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.chip{
 border:1px solid var(--border);background:transparent;color:var(--text);
 border-radius:999px;min-height:40px;padding:0 16px;cursor:pointer;
 transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.chip:hover{border-color:var(--magenta);background:rgba(155,77,202,.12)}
.chip.is-on{background:var(--grad);color:#fff;border-color:transparent}
.chip:active{transform:translateY(1px)}
.path-grid{display:grid;grid-template-columns:1.2fr .9fr 1.05fr;gap:16px}
.step{
 background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-lg);
 padding:22px;transition:transform .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-3px);border-color:rgba(214,58,134,.5)}
.step b{
 display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;
 background:var(--grad);color:#fff;margin-bottom:12px;
}
.step p{color:var(--muted);margin-top:8px}
.topic-grid{display:grid;grid-template-columns:1.35fr .75fr;gap:16px}
.topic-card{
 background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:22px;
}
.topic-card.wide{grid-column:1/-1}
.topic-card h3{margin-bottom:8px}
.topic-card p{color:var(--muted);margin-bottom:12px}
.link-row{display:flex;flex-wrap:wrap;gap:10px 16px}
.compare{
 display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:stretch;
}
.side{
 background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:22px;
}
.side p{color:var(--muted);margin-top:8px}
.mid-mark{
 align-self:center;border-radius:999px;padding:14px 18px;background:var(--grad);color:#fff;
 font-weight:700;text-align:center;min-width:7em;
}
.more-row,.note-row{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.note-row p{color:var(--muted)}
.site-footer{border-top:1px solid transparent;background:#120d16;padding:36px 0 28px;position:relative}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad)}
.foot-grid{display:grid;grid-template-columns:1.3fr .8fr 1.1fr;gap:24px}
.foot-brand p,.foot-note p,.copy-line{color:var(--muted)}
.foot-brand p{margin-top:10px}
.foot-links{display:flex;flex-direction:column;gap:8px}
.foot-links a{color:var(--vine)}
.foot-links a:hover{color:var(--accent)}
.copy-line{margin-top:22px;padding-top:16px;border-top:1px solid var(--border);font-size:14px}
.dock{
 position:fixed;left:0;right:0;bottom:0;z-index:40;background:#120d16;
 border-top:1px solid var(--border);padding:10px 0 calc(10px + env(safe-area-inset-bottom));
}
.dock::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad)}
.dock-inner{display:flex;align-items:center;justify-content:space-between;gap:12px}
.dock-inner span{color:var(--vine);font-weight:700}
@media (max-width:1024px){
 :root{--section-pad:40px}
 h1{font-size:34px}
 h2{font-size:26px}
 .cat-grid,.section-head.split,.topic-grid,.compare,.foot-grid{grid-template-columns:1fr 1fr}
 .compare{grid-template-columns:1fr}
 .mid-mark{justify-self:start}
 .topic-card.wide{grid-column:auto}
 .path-grid{grid-template-columns:1fr 1fr}
 .path-grid .step:last-child{grid-column:1/-1}
}
@media (max-width:768px){
 :root{--section-pad:28px}
 .nav-toggle{display:inline-flex;align-items:center}
 .nav-links{
 display:none;position:absolute;top:74px;left:0;right:0;z-index:60;flex-direction:column;align-items:stretch;
 background:#161018;padding:12px 16px 18px;border-bottom:1px solid var(--border);
 }
 .nav-links.open{display:flex}
 .nav-links a.active::after{left:12px;right:auto;width:36px}
 .nav-cta{margin:8px 0 0}
 .cat-grid,.section-head.split,.path-grid,.topic-grid,.foot-grid,.floor{grid-template-columns:1fr}
 .path-grid .step:last-child{grid-column:auto}
 h1{font-size:30px}
}
@media (max-width:480px){
 .container{width:min(var(--container),calc(100% - 28px))}
 .logo{font-size:14px;max-width:11em}
 h1{font-size:26px}
 h2{font-size:22px}
 .btn,.nav-cta{width:100%}
 .dock-inner{flex-direction:column;align-items:stretch}
 body{padding-bottom:128px}
 .more-row,.note-row{align-items:flex-start}
}

/* roulang page: category2 */
:root{
 --bg:#161018;
 --surface:#241c2b;
 --surface-2:#2e2436;
 --primary:#9b4dca;
 --magenta:#d63a86;
 --accent:#f0b56a;
 --vine:#e6d38a;
 --neon:#ff5fa8;
 --text:#f7f1ea;
 --muted:#b7a8bc;
 --link:#f0b56a;
 --border:rgba(176,140,186,.28);
 --radius-lg:24px;
 --radius:16px;
 --radius-btn:12px;
 --shadow:0 12px 28px rgba(74,32,84,.28);
 --container:1120px;
 --section-pad:64px;
 --grad:linear-gradient(120deg,#8e44c4 0%,#d63a86 46%,#f0b56a 100%);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
 font-size:16px;
 line-height:1.75;
 color:var(--text);
 background:var(--bg);
 padding-bottom:96px;
}
img{max-width:100%;display:block}
a{color:var(--link);text-decoration:none}
a:not(.btn):not(.logo):not(.chip):not(.cloud-link):not(.text-link):hover{
 text-decoration:underline;
 text-decoration-color:rgba(240,181,106,.85);
 text-underline-offset:3px;
}
button,input{font-family:inherit}
p{margin:0 0 10px}
h1,h2,h3{line-height:1.35;font-weight:700;margin:0 0 12px}
h1{font-size:40px}
h2{font-size:30px}
h3{font-size:20px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(214,58,134,.35);color:#fff}
.container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:#161018}
.site-header::after{
 content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--grad);
}
.nav-bar{position:relative;display:flex;align-items:center;gap:16px;min-height:74px}
.logo{
 display:inline-block;
 font-size:16px;font-weight:700;line-height:1.3;max-width:18em;
 background:var(--grad);
 -webkit-background-clip:text;
 background-clip:text;
 color:transparent;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{position:relative;color:var(--text);padding:10px 12px;border-radius:12px}
.nav-links a:not(.btn):hover{color:#fff;filter:brightness(1.15);text-decoration:none}
.nav-links a.active{color:var(--accent);text-shadow:0 0 12px rgba(240,181,106,.65)}
.nav-links a.active::after{
 content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
 background:linear-gradient(120deg,#d63a86,#f0b56a);
}
.nav-links a.btn{color:#fff;text-shadow:none}
.nav-links a.btn::after{display:none}
.nav-cta{margin-left:8px}
.nav-toggle{
 display:none;margin-left:auto;
 background:transparent;color:var(--accent);
 border:1px solid var(--magenta);border-radius:12px;
 min-height:40px;padding:0 14px;cursor:pointer;
}
.nav-toggle:hover{background:rgba(155,77,202,.12)}
.nav-toggle:active{transform:translateY(1px)}
main>section{padding:var(--section-pad) 0}
main>section:nth-child(even){background:var(--surface)}
main>section:nth-child(odd){background:var(--bg)}
.section-head{margin-bottom:22px;max-width:72ch}
.section-head p{margin:0;color:var(--muted)}
.kicker{color:var(--accent);font-size:13px;font-weight:700;letter-spacing:.04em;margin:0 0 8px}
.cat-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:center}
.crumb{color:var(--muted);font-size:14px;margin:0 0 12px}
.crumb a{color:var(--accent)}
.cat-lead{color:var(--vine);font-size:18px;margin:0 0 14px}
.area-row,.badge-row,.meta-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.area-row{margin-top:16px}
.chip,.tag,.stat-badge,.badge{
 display:inline-flex;align-items:center;gap:8px;
 border-radius:999px;border:1px solid var(--border);
 background:var(--surface-2);color:var(--vine);
}
.chip{min-height:40px;padding:0 16px;cursor:pointer;color:var(--text);font-weight:700}
.chip:hover{border-color:var(--magenta);color:#fff}
.chip.is-on{background:var(--grad);color:#fff;border-color:transparent}
.chip:active{transform:translateY(1px)}
.tag{padding:2px 10px;background:rgba(214,58,134,.16);font-size:13px}
.stat-badge,.badge{padding:6px 12px;font-size:14px;line-height:1.4}
.dot{width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px var(--neon)}
.side-panel{display:flex;flex-direction:column;gap:14px}
.ph{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:var(--radius-lg);background:#241c2b}
.ph img{width:100%;height:100%;object-fit:cover}
.ph-a{background:linear-gradient(120deg,#8e44c4,#d63a86 46%,#f0b56a)}
.ph-b{background:linear-gradient(120deg,#6d348f,#c43678,#e6d38a)}
.ph-c{background:linear-gradient(120deg,#9b4dca,#f0b56a)}
.badge-stack{display:flex;flex-wrap:wrap;gap:10px}
.stack-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
.stack-card,.step,.topic-card,.side,.more-card{
 background:var(--surface-2);
 border:1px solid var(--border);
 border-radius:var(--radius-lg);
 box-shadow:0 0 0 rgba(0,0,0,0);
 transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.stack-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.stack-card .ph{border-radius:0}
.stack-card.wide{grid-column:1/-1}
.stack-card[hidden]{display:none !important}
.stack-body{padding:20px 22px 22px}
.stack-card h3 a,.topic-list a{color:var(--text)}
.stack-card h3 a:hover,.topic-list a:hover{color:var(--accent);text-decoration:none;text-shadow:0 0 12px rgba(240,181,106,.35)}
.stack-card:hover,.topic-card:hover,.step:hover,.side:hover,.more-card:hover{
 transform:translateY(-3px);border-color:rgba(214,58,134,.5);box-shadow:var(--shadow);
}
.card-text{color:var(--muted);margin:0 0 8px}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px}
.path-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step{padding:22px}
.step-no{
 width:36px;height:36px;border-radius:50%;
 display:inline-flex;align-items:center;justify-content:center;
 background:var(--grad);color:#fff;font-weight:700;margin-bottom:12px;
}
.mini-ph{width:100%;aspect-ratio:16/9;border-radius:12px;margin-bottom:14px;overflow:hidden}
.mini-ph img{width:100%;height:100%;object-fit:cover}
.topic-grid{display:grid;grid-template-columns:1.3fr .85fr .85fr;gap:16px}
.topic-card{padding:22px}
.topic-list{margin:0;padding:0;list-style:none}
.topic-list li{padding:10px 0;border-bottom:1px solid var(--border)}
.topic-list li:last-child{border-bottom:0}
.compare{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:stretch}
.side{padding:22px}
.side ul{margin:8px 0 0;padding:0;list-style:none}
.side li{padding:8px 0 8px 16px;position:relative;color:var(--muted);border-top:1px solid var(--border)}
.side li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--neon);position:absolute;left:0;top:16px}
.mid-mark{
 align-self:center;padding:12px 16px;border-radius:999px;
 background:var(--grad);color:#fff;font-weight:700;white-space:nowrap;
}
.more-card{padding:22px 24px;display:flex;justify-content:space-between;gap:18px;align-items:center}
.btn{
 display:inline-flex;align-items:center;justify-content:center;
 min-height:46px;padding:0 18px;border-radius:var(--radius-btn);
 font-weight:700;border:1px solid transparent;cursor:pointer;
 transition:transform .2s ease,filter .2s ease,background .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 18px rgba(214,58,134,.28)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);text-decoration:none}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:transparent;color:var(--accent);border-color:var(--neon)}
.btn-ghost:hover{background:rgba(155,77,202,.12);text-decoration:none}
.btn-ghost:active{transform:translateY(1px)}
.text-link{color:var(--vine);font-weight:700;border-bottom:1px solid rgba(230,211,138,.55);padding-bottom:2px}
.text-link:hover{color:var(--accent);text-decoration:none;text-shadow:0 0 12px rgba(240,181,106,.45)}
.end-line{display:flex;justify-content:space-between;gap:16px;align-items:center;color:var(--muted)}
.site-footer{position:relative;background:#120d16;padding:36px 0 28px}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad)}
.foot-grid{display:grid;grid-template-columns:1.3fr .8fr 1fr;gap:24px}
.foot-brand p,.foot-note p{color:var(--muted);margin:10px 0 0}
.foot-links{display:flex;flex-direction:column;gap:8px}
.foot-links a{color:var(--vine)}
.foot-links a:hover{color:var(--accent)}
.copy-line{color:var(--muted);margin:20px 0 0;font-size:14px}
.dock{
 position:fixed;left:0;right:0;bottom:0;z-index:40;
 background:#120d16;
 box-shadow:0 -8px 24px rgba(74,32,84,.28);
 padding-bottom:env(safe-area-inset-bottom);
}
.dock::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad)}
.dock-inner{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.dock-kicker{margin:0;color:var(--vine);font-weight:700}
@media (max-width:1024px){
 :root{--section-pad:40px}
 h1{font-size:34px}
 h2{font-size:26px}
 .cat-grid,.stack-grid,.compare,.foot-grid{grid-template-columns:1fr 1fr}
 .compare{grid-template-columns:1fr}
 .mid-mark{justify-self:start}
 .topic-grid{grid-template-columns:1fr 1fr}
 .topic-grid .topic-card:first-child{grid-column:1/-1}
 .stack-card.wide{grid-column:1/-1}
 .path-row{grid-template-columns:1fr 1fr}
 .path-row .step:last-child{grid-column:1/-1}
}
@media (max-width:768px){
 :root{--section-pad:28px}
 .logo{font-size:14px;max-width:calc(100% - 92px)}
 .nav-toggle{display:inline-flex;align-items:center}
 .nav-links{
 display:none;position:fixed;z-index:80;
 top:82px;left:16px;right:16px;
 flex-direction:column;align-items:stretch;
 background:#161018;border:1px solid var(--border);border-radius:16px;
 padding:12px;box-shadow:var(--shadow);
 }
 .nav-links.is-open{display:flex}
 .nav-cta{margin:8px 0 0}
 .cat-grid,.stack-grid,.topic-grid,.path-row,.foot-grid,.more-card,.end-line{grid-template-columns:1fr;display:grid}
 .stack-card.wide,.topic-grid .topic-card:first-child,.path-row .step:last-child{grid-column:auto}
 .more-card,.end-line{display:flex;flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
 h1{font-size:30px}
 h2{font-size:24px}
 .container{width:min(var(--container),calc(100% - 28px))}
 .btn,.chip{width:100%}
 .dock-inner{flex-direction:column;align-items:stretch;padding:10px 0 12px}
 body{padding-bottom:calc(132px + env(safe-area-inset-bottom))}
}
@media (prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}
 *,*::before,*::after{transition:none !important}
}