/* roulang page: index */
:root{
  --bg:#0B0718;
  --bg-deep:#150E2B;
  --card:#1D1440;
  --mist:#FFFFFF;
  --mist-2:#F6F4FF;
  --violet:#6C3BFF;
  --magenta:#C13BFF;
  --cyan:#35E0C8;
  --gold:#FFB454;
  --ink:#14102B;
  --ink-2:#6B6588;
  --light:#EDE9FF;
  --light-2:#A79FC7;
  --line-dark:rgba(255,255,255,.10);
  --line-light:rgba(108,59,255,.14);
  --grad:linear-gradient(135deg,#6C3BFF 0%,#C13BFF 52%,#35E0C8 100%);
  --r-card:20px;
  --r-big:24px;
  --r-btn:14px;
  --sh-card:0 8px 24px rgba(11,7,24,.28);
  --sh-hover:0 18px 44px rgba(108,59,255,.30);
  --glow:0 0 0 1px rgba(53,224,200,.45),0 0 24px rgba(53,224,200,.35);
  --font-cn:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Barlow","DIN Alternate",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--light);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35}
button{font-family:inherit;font-size:inherit;color:inherit}
input,textarea,select{font-family:inherit;font-size:inherit}
::selection{background:rgba(53,224,200,.35);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:34px;line-height:1.3;letter-spacing:.2px}
.section-head .sub{margin-top:10px;color:var(--light-2);font-size:15px;max-width:640px}
.section-link{color:var(--cyan);font-size:15px;font-weight:600;white-space:nowrap;border-bottom:1px solid rgba(53,224,200,.4);padding-bottom:2px;transition:color .22s,box-shadow .22s}
.section-link:hover{color:#8CF5E4;box-shadow:0 8px 16px -12px rgba(53,224,200,.8)}
.divider{height:1px;background:var(--grad);opacity:.35;border:0;margin:0}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(11,7,24,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;opacity:.7;
  background:linear-gradient(90deg,#6C3BFF 0%,#C13BFF 50%,#35E0C8 100%);
}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:baseline;gap:6px;font-size:19px;letter-spacing:.4px}
.logo b{font-weight:700;color:#F4F1FF}
.logo span{
  font-size:13px;font-weight:600;letter-spacing:2.4px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.nav-menu{display:flex;align-items:center;gap:32px}
.nav-menu a{position:relative;font-size:15px;color:var(--light-2);padding:8px 0;transition:color .22s,text-shadow .22s}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;border-radius:2px;
  background:var(--cyan);box-shadow:0 0 12px rgba(53,224,200,.8);transform:translateX(-50%);
  transition:width .22s ease;
}
.nav-menu a:hover,.nav-menu a.active{color:var(--cyan);text-shadow:0 0 12px rgba(53,224,200,.6)}
.nav-menu a:hover::after,.nav-menu a.active::after{width:60%}
.nav-right{display:flex;align-items:center;gap:14px}
.btn-gold{
  display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 20px;
  border-radius:var(--r-btn);font-size:14px;font-weight:700;color:#2A1704;
  background:linear-gradient(135deg,#FFD98F 0%,#FFB454 100%);
  box-shadow:0 6px 18px rgba(255,180,84,.24);transition:transform .2s,box-shadow .2s,filter .2s;
}
.btn-gold:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 12px 26px rgba(255,180,84,.34)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-dark);
  background:rgba(255,255,255,.04);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--light);transition:.22s}
.nav-toggle:hover{border-color:rgba(53,224,200,.5)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;z-index:90;
  background:#120B28;border-left:1px solid rgba(255,255,255,.08);
  transform:translateX(100%);transition:transform .28s ease;
  padding:88px 24px 32px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer a{display:flex;align-items:center;height:56px;font-size:16px;color:var(--light);border-bottom:1px solid rgba(255,255,255,.08)}
.drawer a:hover,.drawer a.active{color:var(--cyan)}
.drawer .drawer-cta{margin-top:24px;height:48px;justify-content:center;border-radius:var(--r-btn);background:var(--grad);color:#fff;font-weight:600;border-bottom:0}
.scrim{position:fixed;inset:0;background:rgba(6,3,16,.6);z-index:85;opacity:0;pointer-events:none;transition:opacity .28s}
.scrim.show{opacity:1;pointer-events:auto}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:transform .22s,box-shadow .22s,background .22s,border-color .22s,filter .22s;
}
.btn-primary{background:var(--grad);color:#fff}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:var(--glow)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.22);color:var(--light)}
.btn-ghost:hover{background:rgba(108,59,255,.12);border-color:rgba(53,224,200,.5);color:#fff}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.72);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14)}
.btn-text{background:none;border:0;padding:0;height:auto;color:var(--cyan);font-weight:600;position:relative}
.btn-text::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:1px;background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .22s}
.btn-text:hover::after{transform:scaleX(1)}

/* Hero */
.hero{padding:56px 0 0}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;min-height:560px;max-height:760px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:1.4px;color:var(--gold);text-transform:uppercase;margin-bottom:18px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--grad)}
.hero h1{font-size:48px;line-height:1.18;letter-spacing:.4px;color:#F7F5FF}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{margin-top:22px;font-size:17px;line-height:1.85;color:var(--light-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-dark);font-size:13px;color:var(--light-2);
}
.chip b{color:var(--cyan);font-weight:700;font-family:var(--font-num);font-size:15px}
.hero-visual{position:relative;border-radius:var(--r-big);overflow:hidden;min-height:460px;box-shadow:var(--sh-card);border:1px solid rgba(255,255,255,.08)}
.hero-visual>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-veil{position:absolute;inset:0;background:linear-gradient(135deg,rgba(108,59,255,.86) 0%,rgba(193,59,255,.80) 52%,rgba(53,224,200,.72) 100%)}
.hero-card{
  position:absolute;left:24px;right:24px;bottom:24px;
  background:rgba(11,7,24,.72);border:1px solid rgba(53,224,200,.45);
  border-radius:var(--r-big);padding:22px;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.hero-card h2{font-size:16px;color:#fff;margin-bottom:14px;font-weight:600}
.hero-card li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;font-size:14px;color:rgba(255,255,255,.82);border-top:1px solid rgba(255,255,255,.12)}
.hero-card li:first-child{border-top:0}
.hero-card li i{font-style:normal;color:var(--cyan);font-size:12px;letter-spacing:1px}

/* 卖点三连 */
.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.card{
  background:var(--card);border:1px solid var(--line-dark);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-card);transition:transform .24s,border-color .24s,box-shadow .24s;
}
.card:hover{transform:translateY(-3px);border-color:rgba(53,224,200,.45);box-shadow:var(--sh-hover)}
.feat-wide{grid-column:span 6}
.feat-narrow{grid-column:span 3}
.icon-badge{
  width:48px;height:48px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:700;color:#fff;background:var(--grad);margin-bottom:18px;
}
.feat-wide h3{font-size:22px;margin-bottom:12px}
.feat-narrow h3{font-size:18px;margin-bottom:10px}
.card p{color:var(--light-2);font-size:15px;line-height:1.82}
.feat-wide p{margin-bottom:16px}
.tag-inline{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;border-radius:999px;
  background:rgba(255,180,84,.10);border:1px solid rgba(255,180,84,.30);
  color:var(--gold);font-size:13px;font-family:var(--font-num);
}

/* 场景演示 */
.demo-grid{display:grid;grid-template-columns:2fr 1fr;gap:32px;align-items:start}
.demo-shot{border-radius:var(--r-card);overflow:hidden;border:1px solid rgba(255,255,255,.12);position:relative}
.demo-shot img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;border-radius:var(--r-card)}
.steps{background:rgba(255,255,255,.03);border:1px solid var(--line-dark);border-radius:var(--r-card);padding:28px}
.steps h3{font-size:18px;margin-bottom:22px}
.steps li{position:relative;padding-left:52px;padding-bottom:26px}
.steps li:last-child{padding-bottom:0}
.steps li::before{
  content:"";position:absolute;left:17px;top:38px;bottom:0;width:1px;
  background:linear-gradient(180deg,rgba(53,224,200,.6),rgba(193,59,255,.25));
}
.steps li:last-child::before{display:none}
.step-no{
  position:absolute;left:0;top:0;width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-family:var(--font-num);
  font-size:14px;font-weight:700;color:#fff;background:var(--grad);
}
.steps strong{display:block;font-size:15px;color:#F3F0FF;margin-bottom:4px}
.steps span{font-size:14px;color:var(--light-2);line-height:1.7}

/* 数据徽章带 */
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{
  background:rgba(255,180,84,.10);border:1px solid rgba(255,180,84,.30);border-radius:999px;
  padding:22px 26px;text-align:center;
}
.stat .num{font-family:var(--font-num);font-size:40px;line-height:1.05;font-weight:700;color:var(--gold)}
.stat .unit{font-size:14px;color:var(--gold);margin-left:4px;font-family:var(--font-num)}
.stat .desc{font-size:13px;color:var(--light-2);margin-top:6px}

/* 最新资讯 */
.news-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:stretch}
.news-lead{
  display:grid;grid-template-columns:1fr;background:var(--card);border:1px solid var(--line-dark);
  border-radius:var(--r-big);overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .24s,border-color .24s,box-shadow .24s;
}
.news-lead:hover{transform:translateY(-3px);border-color:rgba(53,224,200,.45);box-shadow:var(--sh-hover)}
.news-lead .cover{overflow:hidden;aspect-ratio:16/10}
.news-lead .cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.news-lead:hover .cover img{transform:scale(1.03)}
.news-lead .body{padding:26px}
.news-lead h3{font-size:22px;line-height:1.45;margin-bottom:12px;transition:color .22s}
.news-lead:hover h3{color:var(--cyan)}
.news-lead p{color:var(--light-2);font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.news-mini{
  display:grid;grid-template-columns:132px 1fr;gap:18px;background:var(--card);
  border:1px solid var(--line-dark);border-radius:var(--r-card);padding:18px;
  box-shadow:var(--sh-card);transition:transform .24s,border-color .24s,box-shadow .24s;
}
.news-mini:hover{transform:translateY(-3px);border-color:rgba(53,224,200,.45);box-shadow:var(--sh-hover)}
.news-mini .cover{border-radius:14px;overflow:hidden;aspect-ratio:4/3}
.news-mini .cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.news-mini:hover .cover img{transform:scale(1.03)}
.news-mini h3{font-size:16px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .22s}
.news-mini:hover h3{color:var(--cyan)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:16px;font-size:13px;color:var(--light-2)}
.meta-row .pill{height:24px;padding:0 12px;border-radius:999px;display:inline-flex;align-items:center;background:rgba(108,59,255,.16);border:1px solid rgba(108,59,255,.32);color:#CDBFFF;font-size:12px}
.meta-row .time{font-family:var(--font-num);letter-spacing:.4px}
.arrow{color:var(--cyan);font-size:14px;transition:transform .22s}
.news-lead:hover .arrow,.news-mini:hover .arrow{transform:translateX(4px)}
.empty-card{
  border:1px dashed rgba(255,255,255,.22);border-radius:var(--r-card);min-height:180px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  text-align:center;padding:32px;grid-column:1/-1;
}
.empty-card .ico{width:44px;height:44px;border-radius:50%;border:1px solid rgba(53,224,200,.45);display:flex;align-items:center;justify-content:center;color:var(--cyan);font-size:18px}
.empty-card strong{font-size:16px;color:#F1EEFF}
.empty-card span{font-size:14px;color:var(--light-2)}

/* 社会认同 */
.social-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;align-items:start}
.quote-main{background:var(--mist);color:var(--ink);border-radius:var(--r-big);padding:36px;box-shadow:var(--sh-card)}
.quote-main .mark{font-family:var(--font-num);font-size:52px;line-height:1;color:transparent;background:var(--grad);-webkit-background-clip:text;background-clip:text}
.quote-main p{font-size:18px;line-height:1.85;margin-top:10px}
.person{display:flex;align-items:center;gap:14px;margin-top:26px}
.avatar{width:48px;height:48px;border-radius:50%;background:var(--grad);flex:0 0 auto}
.person strong{display:block;font-size:15px;color:var(--ink)}
.person span{font-size:13px;color:var(--ink-2)}
.quote-side{display:grid;gap:24px}
.quote-side .card{background:rgba(255,255,255,.04)}
.quote-side p{font-size:15px;color:var(--light);line-height:1.8}
.partners{display:flex;flex-wrap:wrap;gap:28px;margin-top:40px;padding-top:28px;border-top:1px solid var(--line-dark)}
.partners span{font-size:14px;letter-spacing:1px;color:var(--light-2);opacity:.5;transition:opacity .22s,color .22s}
.partners span:hover{opacity:1;color:#fff}

/* FAQ */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{border:1px solid var(--line-dark);border-radius:16px;background:rgba(255,255,255,.02);overflow:hidden;transition:border-color .22s}
.faq-item.open{border-color:rgba(53,224,200,.45)}
.faq-q{
  width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 24px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--light);
}
.faq-q:hover{color:var(--cyan)}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto;transition:transform .24s}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--cyan);border-radius:2px}
.faq-icon::before{left:0;right:0;top:8px;height:2px}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px;transition:opacity .24s}
.faq-item.open .faq-icon{transform:rotate(90deg)}
.faq-item.open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.78;color:var(--light-2)}

/* CTA */
.cta-band{
  background:var(--grad);border-radius:var(--r-big);padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--sh-hover);
}
.cta-band h2{font-size:30px;color:#fff;line-height:1.35;max-width:620px}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.86);font-size:15px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:#080413;border-top:1px solid var(--line-dark);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--light-2);font-size:14px;line-height:1.8;max-width:320px}
.footer-col h4{font-size:14px;color:var(--gold);margin-bottom:18px;letter-spacing:.6px}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:var(--light-2);transition:color .2s,padding-left .2s}
.footer-col a:hover{color:#fff;padding-left:4px}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line-dark);padding:24px 0 32px;
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--light-2);
}
.footer-bottom a{color:var(--light-2);border-bottom:1px solid rgba(255,255,255,.18)}
.footer-bottom a:hover{color:var(--cyan);border-color:rgba(53,224,200,.6)}

/* 底部固定转化条 */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;height:64px;
  background:rgba(13,8,30,.94);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-top:1px solid rgba(53,224,200,.28);
  display:flex;align-items:center;
}
.sticky-bar .inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%}
.sticky-bar p{font-size:14px;color:var(--light-2)}
.sticky-bar .acts{display:flex;align-items:center;gap:12px}
.sticky-close{
  width:34px;height:34px;border-radius:50%;border:1px solid var(--line-dark);background:transparent;
  color:var(--light-2);cursor:pointer;line-height:1;transition:.2s;
}
.sticky-close:hover{color:#fff;border-color:rgba(53,224,200,.5)}
.sticky-bar .btn{height:42px;padding:0 22px;font-size:14px}
body.has-sticky{padding-bottom:64px}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s ease,transform .32s ease}
.reveal.in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1279px){
  .container{max-width:960px}
  .hero h1{font-size:42px}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-right .btn-gold{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:36px;min-height:0;max-height:none;padding-bottom:8px}
  .hero{padding:40px 0 0}
  .hero-visual{min-height:360px}
  .feat-wide{grid-column:span 12}
  .feat-narrow{grid-column:span 6}
  .demo-grid{grid-template-columns:1fr}
  .stats-band{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
  .news-side{grid-template-rows:none;gap:20px}
  .social-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-band{padding:36px}
  .section{padding:72px 0}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .section-head h2{font-size:24px}
  .hero h1{font-size:30px;line-height:1.32}
  .hero-lead{font-size:16px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-card{left:16px;right:16px;bottom:16px;padding:18px}
  .card{padding:20px}
  .feat-narrow{grid-column:span 12}
  .quote-main{padding:24px}
  .quote-main p{font-size:16px}
  .cta-band{padding:28px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .site-footer{padding-top:56px;margin-top:56px}
  .news-mini{grid-template-columns:1fr}
  .news-mini .cover{aspect-ratio:16/10}
  .sticky-bar{height:56px}
  .sticky-bar p{display:none}
  .sticky-bar .inner{justify-content:space-between}
  .sticky-bar .acts{width:100%;justify-content:space-between}
  .sticky-bar .btn{flex:1}
  body.has-sticky{padding-bottom:56px}
  .stat{padding:18px 20px}
  .stat .num{font-size:32px}
}
@media (max-width:479px){
  .hero-stats{gap:8px}
  .chip{height:34px;padding:0 12px;font-size:12px}
  .stats-band{grid-template-columns:1fr}
  .steps{padding:20px}
  .hero h1{font-size:27px}
  .partners{gap:18px}
}

/* roulang page: article */
:root{
  --night:#0B0718;
  --deep:#150E2B;
  --card:#1D1440;
  --white:#FFFFFF;
  --fog:#F6F4FF;
  --purple:#6C3BFF;
  --magenta:#C13BFF;
  --cyan:#35E0C8;
  --gold:#FFB454;
  --ink:#14102B;
  --muted:#6B6588;
  --text-dark:#EDE9FF;
  --text-dim:#A79FC7;
  --border-light:rgba(108,59,255,.14);
  --border-dark:rgba(255,255,255,.10);
  --grad:linear-gradient(135deg,#6C3BFF 0%,#C13BFF 52%,#35E0C8 100%);
  --grad-soft:linear-gradient(135deg,rgba(108,59,255,.18) 0%,rgba(193,59,255,.14) 52%,rgba(53,224,200,.16) 100%);
  --r-card:20px;
  --r-lg:24px;
  --r-btn:14px;
  --r-pill:999px;
  --sh-card:0 8px 24px rgba(11,7,24,.28);
  --sh-hover:0 18px 44px rgba(108,59,255,.30);
  --sh-neon:0 0 0 1px rgba(53,224,200,.45),0 0 24px rgba(53,224,200,.35);
  --gap:24px;
  --gap-m:16px;
  --pad-section:96px;
  --pad-section-m:56px;
  --font-cn:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Barlow","DIN Alternate",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--night);
  color:var(--text-dark);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,opacity .2s ease;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;}
p{margin:0;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(108,59,255,.4);color:#fff;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(11,7,24,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:linear-gradient(90deg,rgba(108,59,255,.7),rgba(53,224,200,.7));
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:700;
  letter-spacing:.5px;
  color:#EDE9FF;
  white-space:nowrap;
}
.logo .logo-mark{
  width:26px;height:26px;
  border-radius:9px;
  background:var(--grad);
  box-shadow:0 0 18px rgba(108,59,255,.55);
  flex:none;
}
.logo b{font-weight:700;color:#EDE9FF;}
.logo span{
  font-weight:600;
  background:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  -webkit-text-stroke:.3px rgba(53,224,200,.35);
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:32px;
  margin-left:auto;
}
.nav-menu a{
  position:relative;
  font-size:15px;
  color:var(--text-dim);
  padding:6px 0;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:20%;right:20%;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  opacity:0;
  transform:scaleX(.4);
  transition:opacity .22s ease,transform .22s ease;
}
.nav-menu a:hover,
.nav-menu a.active{color:var(--cyan);text-shadow:0 0 12px rgba(53,224,200,.6);}
.nav-menu a:hover::after,
.nav-menu a.active::after{opacity:1;transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;}
.btn-header{
  display:inline-flex;
  align-items:center;
  height:42px;
  padding:0 20px;
  border-radius:var(--r-btn);
  background:linear-gradient(135deg,#FFC978 0%,#FFB454 60%,#FF9E3D 100%);
  color:#2A1700;
  font-size:15px;
  font-weight:700;
  box-shadow:0 8px 20px rgba(255,180,84,.24);
  transition:transform .2s ease,filter .2s ease,box-shadow .2s ease;
}
.btn-header:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 12px 26px rgba(255,180,84,.34);}
.burger{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--border-dark);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.burger span{display:block;width:20px;height:2px;border-radius:2px;background:#EDE9FF;transition:transform .24s ease,opacity .24s ease;}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.nav-drawer{
  position:fixed;
  top:0;right:0;
  width:82vw;
  max-width:340px;
  height:100vh;
  background:#100A24;
  border-left:1px solid var(--border-dark);
  padding:88px 22px 32px;
  transform:translateX(100%);
  transition:transform .28s ease;
  z-index:120;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer a{
  display:flex;
  align-items:center;
  height:56px;
  font-size:16px;
  color:var(--text-dim);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-drawer a.active,
.nav-drawer a:hover{color:var(--cyan);}
.nav-drawer .drawer-cta{
  display:inline-flex;
  justify-content:center;
  align-items:center;
  width:100%;
  height:48px;
  margin-top:22px;
  border-radius:var(--r-btn);
  background:linear-gradient(135deg,#FFC978,#FF9E3D);
  color:#2A1700;
  font-weight:700;
}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(6,3,15,.6);
  opacity:0;
  pointer-events:none;
  transition:opacity .28s ease;
  z-index:110;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  transition:transform .2s ease,filter .2s ease,background .2s ease,box-shadow .2s ease,color .2s ease;
}
.btn-primary{
  background:var(--grad);
  color:#fff;
  box-shadow:0 10px 26px rgba(108,59,255,.28);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:var(--sh-neon),0 14px 30px rgba(108,59,255,.34);}
.btn-ghost{
  position:relative;
  height:auto;
  padding:4px 2px;
  color:var(--cyan);
  font-size:15px;
}
.btn-ghost::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:currentColor;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
}
.btn-ghost:hover::after{transform:scaleX(1);}
.btn-outline{
  border:1px solid transparent;
  background:linear-gradient(#0B0718,#0B0718) padding-box,var(--grad) border-box;
  color:#EDE9FF;
}
.btn-outline:hover{background:linear-gradient(rgba(108,59,255,.16),rgba(53,224,200,.10)) padding-box,var(--grad) border-box;transform:translateY(-2px);}
.btn-outline-light{
  border:1px solid rgba(255,255,255,.65);
  color:#fff;
}
.btn-outline-light:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);}

/* ============ Article head ============ */
.article-head{
  position:relative;
  padding:56px 0 40px;
  overflow:hidden;
}
.article-head::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.30;
}
.article-head::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(11,7,24,.90) 0%,rgba(21,14,43,.86) 45%,rgba(53,224,200,.20) 100%);
}
.article-head .container{position:relative;z-index:2;}
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-dim);
  margin-bottom:22px;
}
.crumbs a{color:var(--text-dim);}
.crumbs a:hover{color:var(--cyan);}
.crumbs .sep{opacity:.45;}
.crumbs .current{
  max-width:46ch;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  color:#C9C2E6;
}
.article-head h1{
  font-size:38px;
  line-height:1.35;
  letter-spacing:-.2px;
  color:#F4F1FF;
  max-width:880px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-top:24px;
  font-size:13px;
  color:var(--text-dim);
}
.article-meta .meta-item{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:7px 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--border-dark);
  background:rgba(255,255,255,.05);
}
.article-meta .meta-item strong{color:#EDE9FF;font-weight:600;}
.meta-dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(53,224,200,.8);flex:none;}

/* ============ Article body card ============ */
.article-main{padding:0 0 96px;}
.article-shell{
  background:var(--white);
  border-radius:var(--r-lg);
  padding:56px;
  color:var(--ink);
  box-shadow:0 24px 60px rgba(6,3,15,.45);
  position:relative;
  overflow:hidden;
}
.article-shell::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:4px;
  background:var(--grad);
}
.article-body{
  max-width:760px;
  margin:0 auto;
  font-size:16px;
  line-height:1.9;
  color:#221C3F;
  word-break:break-word;
}
.article-body p{margin:0 0 1.4em;}
.article-body h2{
  position:relative;
  font-size:26px;
  line-height:1.4;
  color:var(--ink);
  margin:2em 0 .8em;
  padding-left:16px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.22em;bottom:.22em;
  width:4px;
  border-radius:3px;
  background:var(--grad);
  box-shadow:0 0 12px rgba(53,224,200,.5);
}
.article-body h3{
  font-size:20px;
  line-height:1.5;
  color:var(--ink);
  margin:1.7em 0 .7em;
}
.article-body h4{
  font-size:17px;
  margin:1.5em 0 .6em;
  color:#2B2450;
}
.article-body ul,
.article-body ol{margin:0 0 1.4em;padding-left:1.35em;}
.article-body ul li{list-style:disc;margin:.42em 0;}
.article-body ol li{list-style:decimal;margin:.42em 0;}
.article-body blockquote{
  margin:1.7em 0;
  padding:18px 24px;
  background:var(--fog);
  border-left:4px solid var(--cyan);
  border-radius:0 14px 14px 0;
  color:#4A4468;
  font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:16px;margin:1.6em auto;}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{
  text-align:center;
  font-size:13px;
  color:#8A84A6;
  margin-top:10px;
}
.article-body a{
  color:var(--purple);
  border-bottom:1px dashed rgba(108,59,255,.5);
}
.article-body a:hover{color:#1FA894;border-bottom-color:var(--cyan);}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:15px;
  display:block;
  overflow-x:auto;
}
.article-body th,
.article-body td{
  padding:12px 16px;
  text-align:left;
  border-bottom:1px solid var(--border-light);
  white-space:nowrap;
}
.article-body th{background:var(--fog);color:#2B2450;font-weight:600;}
.article-body tbody tr:nth-child(even){background:#FAF9FF;}
.article-body code{
  background:var(--fog);
  border-radius:6px;
  padding:2px 6px;
  font-size:14px;
  color:#5B33CC;
}
.article-body hr{
  border:none;
  height:1px;
  background:var(--border-light);
  margin:2.2em 0;
}

/* ============ Empty state ============ */
.empty-card{
  max-width:760px;
  margin:0 auto;
  border:1px dashed rgba(108,59,255,.35);
  border-radius:var(--r-card);
  background:#FBFAFF;
  padding:52px 28px;
  text-align:center;
}
.empty-card .empty-icon{
  width:56px;height:56px;
  margin:0 auto 18px;
  border-radius:18px;
  background:var(--grad-soft);
  display:flex;align-items:center;justify-content:center;
  color:var(--purple);
  font-size:24px;
  font-weight:700;
}
.empty-card h2{font-size:22px;color:var(--ink);margin-bottom:10px;}
.empty-card p{font-size:15px;color:var(--muted);margin-bottom:22px;}
.empty-card .btn-primary{color:#fff;}

/* ============ Tags ============ */
.article-tags{
  max-width:760px;
  margin:36px auto 0;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  padding-top:26px;
  border-top:1px solid var(--border-light);
}
.article-tags .tag-label{font-size:13px;color:var(--muted);margin-right:4px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:13px;
  color:#4A3A96;
  background:var(--fog);
  border:1px solid var(--border-light);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.tag:hover{color:#189B87;border-color:rgba(53,224,200,.55);background:#F0FFFC;}

/* ============ Prev / Next ============ */
.prev-next{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:var(--gap);
  margin-top:64px;
}
.pn-card{
  display:block;
  background:var(--card);
  border:1px solid var(--border-dark);
  border-radius:var(--r-card);
  padding:24px 26px;
  box-shadow:var(--sh-card);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.pn-card:hover{transform:translateY(-4px);border-color:rgba(53,224,200,.55);box-shadow:var(--sh-hover);}
.pn-card .pn-label{
  font-size:12px;
  letter-spacing:1px;
  color:var(--gold);
  margin-bottom:10px;
}
.pn-card h3{
  font-size:17px;
  line-height:1.5;
  color:#EDE9FF;
  margin-bottom:8px;
  transition:color .2s ease;
}
.pn-card:hover h3{color:var(--cyan);}
.pn-card p{font-size:13.5px;color:var(--text-dim);}
.pn-card.pn-right{text-align:right;}

/* ============ Related ============ */
.related-section{padding:0 0 96px;}
.section-head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:32px;
}
.section-head-row h2{font-size:34px;line-height:1.3;color:#F4F1FF;}
.section-head-row .head-sub{font-size:14px;color:var(--text-dim);margin-top:10px;}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--gap);
}
.related-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--border-dark);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.related-card:hover{transform:translateY(-4px);border-color:rgba(53,224,200,.55);box-shadow:var(--sh-hover);}
.related-card .thumb{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--deep);
}
.related-card .thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .3s ease;
}
.related-card:hover .thumb img{transform:scale(1.04);}
.related-card .related-body{padding:22px 24px 24px;}
.related-card h3{
  font-size:18px;
  line-height:1.5;
  color:#EDE9FF;
  margin-bottom:10px;
  transition:color .2s ease;
}
.related-card:hover h3{color:var(--cyan);}
.related-card p{
  font-size:14px;
  color:var(--text-dim);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card .related-meta{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:16px;
  font-size:12.5px;
  color:#8B84AC;
}

/* ============ CTA bar ============ */
.cta-bar{
  margin:0 0 96px;
}
.cta-bar-inner{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  background:linear-gradient(135deg,#6C3BFF 0%,#C13BFF 55%,#35E0C8 100%);
  box-shadow:0 24px 60px rgba(108,59,255,.28);
}
.cta-bar-inner::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(120% 140% at 90% 10%,rgba(255,255,255,.22),transparent 60%);
}
.cta-bar-text{position:relative;z-index:2;max-width:640px;}
.cta-bar-text h2{font-size:28px;line-height:1.35;color:#fff;margin-bottom:10px;}
.cta-bar-text p{font-size:15px;color:rgba(255,255,255,.88);}
.cta-bar-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

/* ============ Sticky bottom bar ============ */
.sticky-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:80;
  height:64px;
  display:flex;
  align-items:center;
  background:rgba(17,11,37,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-top:1px solid var(--border-dark);
  transform:translateY(0);
  transition:transform .3s ease,opacity .3s ease;
}
.sticky-cta.is-hidden{transform:translateY(110%);opacity:0;pointer-events:none;}
.sticky-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
}
.sticky-text{font-size:14px;color:var(--text-dim);}
.sticky-text strong{color:#EDE9FF;font-weight:600;}
.sticky-actions{display:flex;align-items:center;gap:12px;}
.sticky-actions .btn{height:40px;padding:0 20px;font-size:14px;}
.sticky-close{
  width:32px;height:32px;
  border-radius:10px;
  border:1px solid var(--border-dark);
  color:var(--text-dim);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;
  line-height:1;
}
.sticky-close:hover{color:#fff;border-color:rgba(53,224,200,.5);}

/* ============ Footer ============ */
.site-footer{
  background:#080513;
  border-top:1px solid var(--border-dark);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{font-size:20px;margin-bottom:16px;}
.footer-brand p{
  font-size:14px;
  line-height:1.9;
  color:var(--text-dim);
  max-width:420px;
}
.footer-col h4{
  font-size:14px;
  color:var(--gold);
  margin-bottom:18px;
  letter-spacing:.5px;
}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:14px;color:var(--text-dim);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:22px 0 28px;
  border-top:1px solid var(--border-dark);
  font-size:13px;
  color:#7C759B;
}
.footer-bottom a{color:#9B94B8;}
.footer-bottom a:hover{color:var(--cyan);}

/* ============ Reveal ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s ease,transform .32s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ============ Responsive ============ */
@media (max-width:1279px){
  .container{max-width:960px;}
  .related-grid{gap:20px;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .burger{display:flex;}
  .btn-header{display:none;}
  .article-head h1{font-size:32px;}
  .article-shell{padding:40px 32px;}
  .section-head-row h2{font-size:28px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .header-inner{height:60px;}
  .logo{font-size:17px;}
  .logo .logo-mark{width:22px;height:22px;border-radius:8px;}
  .article-head{padding:40px 0 28px;}
  .article-head h1{font-size:26px;line-height:1.38;}
  .article-meta{gap:8px;margin-top:18px;}
  .article-meta .meta-item{padding:6px 12px;font-size:12px;}
  .article-main{padding-bottom:56px;}
  .article-shell{padding:28px 20px;border-radius:20px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:21px;margin-top:1.7em;}
  .article-body h3{font-size:18px;}
  .prev-next{grid-template-columns:1fr;margin-top:44px;}
  .pn-card.pn-right{text-align:left;}
  .related-section{padding-bottom:56px;}
  .related-grid{grid-template-columns:1fr;gap:18px;}
  .section-head-row{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-head-row h2{font-size:24px;}
  .cta-bar{margin-bottom:56px;}
  .cta-bar-inner{flex-direction:column;align-items:flex-start;padding:30px 24px;}
  .cta-bar-text h2{font-size:22px;}
  .cta-bar-actions{width:100%;}
  .cta-bar-actions .btn{flex:1;}
  .sticky-cta{height:56px;}
  .sticky-inner{gap:12px;}
  .sticky-text{display:none;}
  .sticky-actions{width:100%;}
  .sticky-actions .btn{flex:1;height:40px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .article-tags{margin-top:26px;padding-top:20px;}
}
@media (max-width:479px){
  .logo{font-size:15.5px;gap:8px;}
  .article-head h1{font-size:23px;}
  .article-meta .meta-item{font-size:11.5px;}
  .article-shell{padding:22px 16px;}
  .article-body{font-size:15.5px;}
  .related-card .related-body{padding:18px 18px 20px;}
  .cta-bar-inner{padding:26px 18px;}
  .cta-bar-actions{flex-direction:column;}
  .cta-bar-actions .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --night:#0B0718;
  --ink:#150E2B;
  --panel:#1D1440;
  --mist:#FFFFFF;
  --mist-2:#F6F4FF;
  --violet:#6C3BFF;
  --magenta:#C13BFF;
  --cyan:#35E0C8;
  --gold:#FFB454;
  --text-dark:#14102B;
  --text-mute:#6B6588;
  --on-dark:#EDE9FF;
  --on-dark-mute:#A79FC7;
  --line-light:rgba(108,59,255,.14);
  --line-dark:rgba(255,255,255,.10);
  --grad:linear-gradient(135deg,#6C3BFF 0%,#C13BFF 52%,#35E0C8 100%);
  --grad-soft:linear-gradient(135deg,rgba(108,59,255,.16) 0%,rgba(193,59,255,.14) 52%,rgba(53,224,200,.16) 100%);
  --r-card:20px;
  --r-lg:24px;
  --r-btn:14px;
  --sh-card:0 8px 24px rgba(11,7,24,.28);
  --sh-hover:0 18px 44px rgba(108,59,255,.30);
  --glow:0 0 0 1px rgba(53,224,200,.45),0 0 24px rgba(53,224,200,.35);
  --section-y:96px;
  --section-y-m:56px;
  --container:1200px;
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--night);
  color:var(--on-dark);
  font-family:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(760px 460px at 12% -6%,rgba(108,59,255,.30),transparent 70%),
    radial-gradient(620px 420px at 92% 8%,rgba(193,59,255,.20),transparent 72%),
    radial-gradient(520px 380px at 50% 108%,rgba(53,224,200,.14),transparent 70%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
.section{padding:var(--section-y) 0;}
.section-tight{padding:64px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-head h2{
  font-size:34px;
  line-height:1.29;
  font-weight:700;
  letter-spacing:.2px;
}
.section-head p{
  margin-top:12px;
  font-size:15px;
  line-height:1.8;
  color:var(--on-dark-mute);
  max-width:640px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:2px;
  color:var(--cyan);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:linear-gradient(90deg,var(--violet),var(--cyan));
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(11,7,24,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.site-header::after{
  content:"";
  display:block;
  height:2px;
  background:linear-gradient(90deg,var(--violet),var(--cyan));
  opacity:.7;
}
.header-inner{
  height:var(--nav-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  font-size:20px;
  font-weight:700;
  letter-spacing:.5px;
  white-space:nowrap;
}
.logo b{color:#EDE9FF;font-weight:700;}
.logo span{
  background:linear-gradient(135deg,#6C3BFF 0%,#C13BFF 52%,#35E0C8 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  -webkit-text-stroke:.4px rgba(53,224,200,.5);
  font-weight:700;
}
.nav-wrap{display:flex;align-items:center;gap:32px;}
.nav-menu{display:flex;align-items:center;gap:32px;}
.nav-menu a{
  position:relative;
  font-size:15px;
  line-height:1;
  padding:26px 0;
  color:var(--on-dark-mute);
  transition:color .22s ease;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:16px;
  width:60%;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  opacity:0;
  transform:scaleX(.4);
  transform-origin:left;
  transition:opacity .22s ease,transform .22s ease;
}
.nav-menu a:hover,
.nav-menu a.active{
  color:var(--cyan);
  text-shadow:0 0 12px rgba(53,224,200,.6);
}
.nav-menu a:hover::after,
.nav-menu a.active::after{opacity:1;transform:scaleX(1);}
.nav-cta{
  display:inline-flex;
  align-items:center;
  height:42px;
  padding:0 20px;
  border-radius:var(--r-btn);
  font-size:14px;
  font-weight:600;
  color:#2A1A00;
  background:linear-gradient(135deg,#FFD08A 0%,#FFB454 100%);
  box-shadow:0 6px 18px rgba(255,180,84,.24);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.nav-cta:hover{
  transform:translateY(-2px);
  filter:brightness(1.06);
  box-shadow:0 10px 26px rgba(255,180,84,.34);
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line-dark);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle i{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--on-dark);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle.open i:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open i:nth-child(2){opacity:0;}
.nav-toggle.open i:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 分类 Hero ---------- */
.hero-cat{
  position:relative;
  height:40vh;
  min-height:330px;
  max-height:460px;
  display:flex;
  align-items:center;
  overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.hero-cat::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(45deg,rgba(11,7,24,.94) 0%,rgba(21,14,43,.86) 26%,rgba(108,59,255,.70) 58%,rgba(193,59,255,.52) 80%,rgba(53,224,200,.38) 100%);
}
.hero-inner{
  position:relative;
  z-index:2;
  width:100%;
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:40px;
}
.hero-copy{max-width:680px;}
.hero-copy h1{
  font-size:44px;
  line-height:1.26;
  font-weight:700;
  letter-spacing:.4px;
}
.hero-copy p{
  margin-top:16px;
  font-size:16px;
  line-height:1.8;
  color:var(--on-dark-mute);
}
.hero-badges{display:flex;gap:16px;flex-shrink:0;}
.mini-badge{
  min-width:168px;
  padding:20px 22px;
  border-radius:var(--r-card);
  background:rgba(29,20,64,.72);
  border:1px solid var(--line-dark);
  box-shadow:var(--sh-card);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}
.mini-badge .num{
  display:flex;
  align-items:baseline;
  gap:4px;
  font-family:"Barlow","DIN Alternate",system-ui,sans-serif;
  font-size:32px;
  line-height:1.1;
  font-weight:700;
  color:var(--gold);
}
.mini-badge .num em{font-style:normal;font-size:13px;color:var(--on-dark-mute);font-family:inherit;}
.mini-badge .cap{
  margin-top:8px;
  font-size:13px;
  line-height:1.6;
  color:var(--on-dark-mute);
}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;
  top:var(--nav-h);
  z-index:90;
  background:rgba(11,7,24,.9);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-dark);
}
.anchor-track{
  display:flex;
  gap:12px;
  overflow-x:auto;
  padding:14px 0;
  scrollbar-width:none;
}
.anchor-track::-webkit-scrollbar{display:none;}
.anchor-track a{
  flex:0 0 auto;
  padding:9px 18px;
  border-radius:999px;
  font-size:14px;
  color:var(--on-dark-mute);
  border:1px solid var(--line-dark);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.anchor-track a:hover{color:var(--on-dark);border-color:rgba(53,224,200,.45);}
.anchor-track a.active{
  color:#04241F;
  background:linear-gradient(135deg,rgba(53,224,200,.92),rgba(53,224,200,.72));
  border-color:rgba(53,224,200,.9);
  box-shadow:0 0 0 1px rgba(53,224,200,.35),0 0 18px rgba(53,224,200,.28);
  font-weight:600;
}

/* ---------- 卡片网格 ---------- */
.grid-cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.card{
  display:flex;
  flex-direction:column;
  background:var(--mist);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  border:1px solid transparent;
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-hover);
  border-color:rgba(53,224,200,.55);
}
.card-cover{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--ink);
}
.card-cover img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .34s ease;
}
.card:hover .card-cover img{transform:scale(1.03);}
.card-body{
  padding:26px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
}
.card-body h3{
  font-size:20px;
  line-height:1.5;
  font-weight:700;
  color:var(--text-dark);
  transition:color .22s ease;
}
.card:hover .card-body h3{color:#5A2BE0;}
.card-body p{
  font-size:14px;
  line-height:1.85;
  color:var(--text-mute);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  padding-top:16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  border-top:1px solid var(--line-light);
}
.chip{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  color:#5A2BE0;
  background:rgba(108,59,255,.10);
  border:1px solid rgba(108,59,255,.20);
}
.chip.gold{color:#8A5A00;background:rgba(255,180,84,.16);border-color:rgba(255,180,84,.36);}
.chip.cyan{color:#0A6B5F;background:rgba(53,224,200,.16);border-color:rgba(53,224,200,.4);}
.meta-time{
  font-size:13px;
  color:var(--text-mute);
  font-family:"Barlow","DIN Alternate",system-ui,sans-serif;
}
.card-link{position:absolute;inset:0;z-index:3;text-indent:-9999px;overflow:hidden;}
.card-cover .flag{
  position:absolute;
  top:14px;
  left:14px;
  z-index:2;
  height:28px;
  padding:0 12px;
  display:inline-flex;
  align-items:center;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  color:#04241F;
  background:linear-gradient(135deg,rgba(53,224,200,.95),rgba(53,224,200,.78));
}

/* 说明文字块 */
.note-row{
  grid-column:1 / -1;
  padding:28px 32px;
  border-radius:var(--r-card);
  background:var(--grad-soft);
  border:1px solid var(--line-dark);
  border-left:4px solid var(--cyan);
}
.note-row p{
  font-size:15px;
  line-height:1.85;
  color:var(--on-dark);
}
.note-row p + p{margin-top:6px;color:var(--on-dark-mute);font-size:14px;}

/* ---------- 分类索引 ---------- */
.index-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.index-card{
  position:relative;
  display:flex;
  gap:24px;
  padding:32px;
  border-radius:var(--r-lg);
  background:var(--panel);
  border:1px solid var(--line-dark);
  box-shadow:var(--sh-card);
  transition:border-color .28s ease,transform .28s ease,box-shadow .28s ease;
}
.index-card:hover{
  transform:translateY(-4px);
  border-color:rgba(53,224,200,.5);
  box-shadow:var(--sh-hover);
}
.index-card .thumb{
  flex:0 0 132px;
  height:132px;
  border-radius:16px;
  overflow:hidden;
  border:1px solid var(--line-dark);
}
.index-card .thumb img{width:100%;height:100%;object-fit:cover;}
.index-card h3{
  font-size:22px;
  line-height:1.4;
  font-weight:700;
  transition:color .22s ease;
}
.index-card:hover h3{color:var(--cyan);}
.index-card p{
  margin-top:10px;
  font-size:14px;
  line-height:1.85;
  color:var(--on-dark-mute);
}
.index-card .tags{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap;}
.index-card .tags span{
  font-size:12px;
  padding:4px 12px;
  border-radius:999px;
  color:var(--on-dark-mute);
  border:1px solid var(--line-dark);
  background:rgba(255,255,255,.03);
}

/* ---------- 使用提示步骤 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:30px 26px;
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line-dark);
  box-shadow:var(--sh-card);
}
.step::after{
  content:"";
  position:absolute;
  top:48px;
  right:-24px;
  width:24px;
  height:1px;
  background-image:linear-gradient(90deg,rgba(53,224,200,.7) 0 6px,transparent 6px 12px);
  background-size:12px 1px;
  background-repeat:repeat-x;
}
.step:last-child::after{display:none;}
.step .dot{
  width:44px;
  height:44px;
  border-radius:999px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:"Barlow","DIN Alternate",system-ui,sans-serif;
  font-size:18px;
  font-weight:700;
  color:#0B0718;
  background:var(--grad);
  margin-bottom:18px;
}
.step h3{font-size:18px;line-height:1.5;font-weight:700;}
.step p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--on-dark-mute);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{
  border:1px solid var(--line-dark);
  border-radius:16px;
  background:rgba(29,20,64,.5);
  overflow:hidden;
  transition:border-color .24s ease,background .24s ease;
}
.faq-item.open{border-color:rgba(53,224,200,.45);background:rgba(29,20,64,.82);}
.faq-q{
  width:100%;
  min-height:64px;
  padding:0 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--on-dark);
}
.faq-q:hover{color:var(--cyan);}
.faq-icon{
  flex:0 0 auto;
  position:relative;
  width:18px;
  height:18px;
  transition:transform .24s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--cyan);
  border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;transition:opacity .24s ease;}
.faq-item.open .faq-icon{transform:rotate(90deg);}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s ease;
}
.faq-a p{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.74;
  color:var(--on-dark-mute);
}

/* ---------- CTA 条 ---------- */
.cta-band{
  border-radius:var(--r-lg);
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  background:linear-gradient(120deg,#6C3BFF 0%,#C13BFF 58%,#35E0C8 100%);
  box-shadow:0 20px 48px rgba(108,59,255,.28);
}
.cta-band h2{
  font-size:28px;
  line-height:1.4;
  font-weight:700;
  color:#FFFFFF;
}
.cta-band p{
  margin-top:10px;
  font-size:15px;
  line-height:1.8;
  color:rgba(255,255,255,.86);
}
.cta-actions{display:flex;gap:14px;flex-shrink:0;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease,background .22s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#6C3BFF 0%,#C13BFF 52%,#35E0C8 100%);
  color:#FFFFFF;
  box-shadow:0 10px 24px rgba(108,59,255,.32);
}
.btn-primary:hover{
  transform:translateY(-2px);
  filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(53,224,200,.45),0 0 24px rgba(53,224,200,.35);
}
.btn-ghost{
  background:transparent;
  color:#FFFFFF;
  border:1px solid rgba(255,255,255,.72);
}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px);}
.btn-outline{
  background:transparent;
  color:var(--on-dark);
  border:1px solid rgba(255,255,255,.28);
}
.btn-outline:hover{background:rgba(255,255,255,.08);transform:translateY(-2px);}
.btn:disabled,
.btn[aria-disabled="true"]{opacity:.4;pointer-events:none;}

/* 分页/加载位 */
.pager{
  margin-top:36px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
}
.pager a,
.pager span{
  min-width:42px;
  height:42px;
  padding:0 14px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  font-size:14px;
  color:var(--on-dark-mute);
  border:1px solid var(--line-dark);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.pager a:hover{color:var(--on-dark);border-color:rgba(53,224,200,.5);}
.pager .current{
  color:#FFFFFF;
  font-weight:600;
  border-color:transparent;
  background:linear-gradient(135deg,#6C3BFF 0%,#C13BFF 100%);
}
.pager .disabled{opacity:.4;pointer-events:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--section-y);
  padding:72px 0 0;
  background:rgba(21,14,43,.72);
  border-top:1px solid var(--line-dark);
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{font-size:19px;margin-bottom:16px;}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:var(--on-dark-mute);
  max-width:340px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--gold);
  margin-bottom:18px;
  letter-spacing:.5px;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{
  font-size:14px;
  color:var(--on-dark-mute);
  transition:color .2s ease;
}
.footer-col a:hover{color:#FFFFFF;}
.footer-bottom{
  border-top:1px solid var(--line-dark);
  padding:22px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--on-dark-mute);
}
.footer-bottom a{color:var(--cyan);}
.footer-bottom a:hover{text-decoration:underline;}

/* ---------- 底部转化条 ---------- */
.sticky-cta{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:95;
  height:64px;
  display:flex;
  align-items:center;
  background:rgba(21,14,43,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-top:1px solid var(--line-dark);
  transform:translateY(0);
  transition:transform .3s ease;
}
.sticky-cta.hide{transform:translateY(110%);}
.sticky-cta .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.sticky-cta p{font-size:14px;color:var(--on-dark);}
.sticky-cta p b{color:var(--cyan);font-weight:600;}
.sticky-cta .btn{height:40px;padding:0 20px;font-size:14px;}
.sticky-close{
  width:32px;
  height:32px;
  border-radius:10px;
  border:1px solid var(--line-dark);
  color:var(--on-dark-mute);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  line-height:1;
  flex:0 0 auto;
}
.sticky-close:hover{color:#FFFFFF;border-color:rgba(53,224,200,.5);}
body{padding-bottom:64px;}

/* ---------- 滚动入场 ---------- */
html.js .reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .32s ease,transform .32s ease;
}
html.js .reveal.is-visible{opacity:1;transform:none;}

/* ---------- 断点 ---------- */
@media (max-width:1279px){
  .container{max-width:960px;}
  .grid-cards{grid-template-columns:repeat(2,1fr);}
  .hero-copy h1{font-size:38px;}
}
@media (max-width:1023px){
  :root{--nav-h:60px;}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .nav-wrap{gap:0;}
  .nav-menu{
    position:fixed;
    top:var(--nav-h);
    right:0;
    width:82vw;
    max-width:340px;
    height:calc(100vh - var(--nav-h));
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:12px 16px;
    background:rgba(11,7,24,.98);
    border-left:1px solid var(--line-dark);
    transform:translateX(105%);
    transition:transform .3s ease;
    overflow-y:auto;
  }
  .nav-menu.open{transform:translateX(0);}
  .nav-menu a{
    height:56px;
    display:flex;
    align-items:center;
    padding:0 12px;
    font-size:16px;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .nav-menu a::after{display:none;}
  .hero-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .hero-cat{height:auto;min-height:0;padding:56px 0;}
  .hero-badges{flex-wrap:wrap;}
  .index-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step::after{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 32px;}
}
@media (max-width:767px){
  :root{--section-y:56px;--section-y-m:56px;}
  .container{padding:0 16px;}
  .section{padding:var(--section-y) 0;}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:28px;}
  .section-head h2{font-size:24px;line-height:1.42;}
  .hero-copy h1{font-size:30px;line-height:1.27;}
  .hero-copy p{font-size:15px;}
  .grid-cards{grid-template-columns:1fr;gap:16px;}
  .card-body{padding:20px;}
  .note-row{padding:22px 20px;}
  .index-card{flex-direction:column;padding:24px;}
  .index-card .thumb{flex:none;width:100%;height:170px;}
  .steps{grid-template-columns:1fr;}
  .cta-band{padding:30px 22px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .sticky-cta{height:56px;}
  .sticky-cta p{font-size:13px;}
  .sticky-cta .btn{display:none;}
  body{padding-bottom:56px;}
}
@media (max-width:479px){
  .hero-badges{width:100%;}
  .mini-badge{flex:1 1 100%;min-width:0;}
  .logo{font-size:17px;}
  .section-head h2{font-size:22px;}
  .hero-copy h1{font-size:26px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  html.js .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;}
}

/* roulang page: category1 */
:root{
  --bg:#0B0718;
  --bg-deep:#150E2B;
  --card-float:#1D1440;
  --white:#FFFFFF;
  --white-2:#F6F4FF;
  --purple:#6C3BFF;
  --magenta:#C13BFF;
  --cyan:#35E0C8;
  --gold:#FFB454;
  --text-dark:#14102B;
  --text-mute:#6B6588;
  --text-light:#EDE9FF;
  --text-light-mute:#A79FC7;
  --border-light:rgba(108,59,255,.14);
  --border-dark:rgba(255,255,255,.10);
  --grad:linear-gradient(135deg,#6C3BFF 0%,#C13BFF 52%,#35E0C8 100%);
  --grad-soft:linear-gradient(135deg,rgba(108,59,255,.16) 0%,rgba(193,59,255,.10) 52%,rgba(53,224,200,.10) 100%);
  --r-sm:12px;
  --r-card:20px;
  --r-lg:24px;
  --r-btn:14px;
  --sh-card:0 8px 24px rgba(11,7,24,.28);
  --sh-hover:0 18px 44px rgba(108,59,255,.30);
  --glow:0 0 0 1px rgba(53,224,200,.45),0 0 24px rgba(53,224,200,.35);
  --font:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Barlow","DIN Alternate",system-ui,sans-serif;
  --head-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-light);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
body.has-fixed-bar{padding-bottom:64px}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,textarea{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:34px;line-height:1.3;font-weight:700;color:var(--text-light);letter-spacing:.3px}
.section-head p{margin-top:12px;font-size:15px;color:var(--text-light-mute);max-width:680px}
.section-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--gold);border:1px solid rgba(255,180,84,.32);background:rgba(255,180,84,.10);border-radius:999px;padding:5px 14px;margin-bottom:16px;letter-spacing:.5px}
.text-link{font-size:15px;color:var(--cyan);display:inline-flex;align-items:center;gap:6px;transition:opacity .22s}
.text-link:hover{opacity:.78}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(11,7,24,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:linear-gradient(90deg,rgba(108,59,255,.7),rgba(193,59,255,.55),rgba(53,224,200,.7))}
.header-inner{display:flex;align-items:center;gap:32px;height:var(--head-h)}
.logo{display:inline-flex;align-items:baseline;gap:3px;font-size:20px;font-weight:700;letter-spacing:.4px;flex-shrink:0}
.logo b{color:var(--text-light);font-weight:700}
.logo span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:700}
.nav-menu{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-menu a{position:relative;font-size:15px;color:var(--text-light-mute);padding:10px 0;transition:color .22s}
.nav-menu a::after{content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;background:var(--cyan);transform:translateX(-50%);box-shadow:0 0 12px rgba(53,224,200,.75);transition:width .22s}
.nav-menu a:hover,.nav-menu a.active{color:var(--cyan);text-shadow:0 0 12px rgba(53,224,200,.6)}
.nav-menu a:hover::after,.nav-menu a.active::after{width:60%}
.header-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--border-dark);border-radius:var(--r-sm);background:rgba(255,255,255,.04);align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle i{display:block;width:18px;height:2px;background:var(--text-light);border-radius:2px;transition:.22s}
.nav-drawer{position:fixed;top:0;right:0;width:82vw;max-width:360px;height:100%;background:var(--bg-deep);border-left:1px solid var(--border-dark);transform:translateX(101%);transition:transform .28s ease;z-index:210;padding:24px 0;display:flex;flex-direction:column}
.nav-drawer.open{transform:translateX(0)}
.nav-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 20px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.drawer-close{width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--border-dark);background:transparent;color:var(--text-light);font-size:18px;line-height:1}
.nav-drawer a.drawer-link{display:flex;align-items:center;height:56px;padding:0 20px;font-size:16px;color:var(--text-light-mute);border-bottom:1px solid rgba(255,255,255,.08)}
.nav-drawer a.drawer-link.active{color:var(--cyan);text-shadow:0 0 12px rgba(53,224,200,.5)}
.drawer-mask{position:fixed;inset:0;background:rgba(6,3,16,.62);opacity:0;visibility:hidden;transition:.28s;z-index:200}
.drawer-mask.open{opacity:1;visibility:visible}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .22s,box-shadow .22s,filter .22s,background .22s,color .22s;white-space:nowrap}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(108,59,255,.32)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:var(--glow),0 12px 32px rgba(108,59,255,.36)}
.btn-gold{background:linear-gradient(135deg,#FFC46B 0%,#FF9A2E 100%);color:#21123A}
.btn-gold:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 12px 30px rgba(255,180,84,.32)}
.btn-outline{background:transparent;color:var(--text-light);border:1px solid rgba(108,59,255,.55);background-image:linear-gradient(135deg,rgba(108,59,255,.18),rgba(53,224,200,.12));background-size:0% 100%;background-repeat:no-repeat;transition:background-size .26s,transform .22s,color .22s}
.btn-outline:hover{background-size:100% 100%;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--cyan);padding:0;height:auto}
.btn-ghost span{position:relative}
.btn-ghost span::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:1px;background:currentColor;transform:scaleX(.35);transform-origin:left;transition:transform .22s}
.btn-ghost:hover span::after{transform:scaleX(1)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-light-outline{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.72)}
.btn-light-outline:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}

/* Breadcrumb */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-light-mute);margin-bottom:18px}
.breadcrumb a{color:var(--text-light-mute);transition:color .22s}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb span.sep{opacity:.5}
.breadcrumb span.current{color:var(--cyan)}

/* Category hero */
.cat-hero{position:relative;min-height:40vh;display:flex;align-items:center;background-color:var(--bg-deep);background-image:linear-gradient(135deg,rgba(11,7,24,.90) 0%,rgba(108,59,255,.62) 48%,rgba(53,224,200,.40) 100%),url(/assets/images/backpic/back-2.webp);background-size:cover;background-position:center;overflow:hidden}
.cat-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,rgba(255,255,255,0),rgba(53,224,200,.6),rgba(255,255,255,0))}
.cat-hero-inner{position:relative;z-index:2;display:flex;align-items:flex-end;justify-content:space-between;gap:48px;width:100%;padding:64px 0}
.cat-hero-copy{max-width:720px}
.cat-hero h1{font-size:40px;line-height:1.28;font-weight:700;color:#fff;letter-spacing:.5px;text-shadow:0 4px 24px rgba(11,7,24,.6)}
.cat-hero-sub{margin-top:16px;font-size:16px;line-height:1.8;color:rgba(237,233,255,.86);max-width:640px}
.hero-badges{display:flex;gap:16px;flex-wrap:wrap}
.badge-stat{border:1px solid rgba(255,180,84,.32);background:rgba(255,180,84,.10);border-radius:999px;padding:14px 26px;min-width:168px;backdrop-filter:blur(4px)}
.badge-stat .num{font-family:var(--font-num);font-size:40px;line-height:1.1;font-weight:700;color:var(--gold)}
.badge-stat .num small{font-size:14px;font-weight:600;margin-left:4px;color:rgba(255,180,84,.86)}
.badge-stat .desc{display:block;font-size:13px;color:var(--text-light-mute);margin-top:2px}

/* Anchor bar */
.anchor-bar{position:sticky;top:var(--head-h);z-index:90;background:rgba(21,14,43,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border-dark)}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-link{white-space:nowrap;font-size:14px;color:var(--text-light-mute);padding:8px 18px;border-radius:999px;border:1px solid transparent;transition:.22s}
.anchor-link:hover{color:var(--text-light);background:rgba(255,255,255,.06)}
.anchor-link.active{color:var(--cyan);border-color:rgba(53,224,200,.45);background:rgba(53,224,200,.10);text-shadow:0 0 12px rgba(53,224,200,.5)}

/* Cards grid */
.grid-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{background:var(--card-float);border:1px solid var(--border-dark);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;transition:transform .26s,box-shadow .26s,border-color .26s}
.card:hover{transform:translateY(-4px);border-color:rgba(53,224,200,.45);box-shadow:var(--sh-hover)}
.card-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-deep)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .36s ease}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:28px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:22px;line-height:1.4;font-weight:600;color:var(--text-light)}
.card:hover .card-body h3{color:var(--cyan)}
.card-body p{font-size:14px;line-height:1.85;color:var(--text-light-mute)}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid rgba(255,255,255,.07)}
.mini-badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--gold);border:1px solid rgba(255,180,84,.30);background:rgba(255,180,84,.09);border-radius:999px;padding:4px 12px}
.card-arrow{width:30px;height:30px;border-radius:50%;border:1px solid rgba(53,224,200,.35);display:flex;align-items:center;justify-content:center;color:var(--cyan);font-size:14px;transition:.22s}
.card:hover .card-arrow{background:rgba(53,224,200,.14);box-shadow:0 0 16px rgba(53,224,200,.28)}

.note-card{background:var(--grad-soft);border:1px dashed rgba(255,255,255,.16);border-radius:var(--r-card);padding:28px;display:flex;flex-direction:column;justify-content:center;gap:12px}
.note-card .note-label{font-size:12px;letter-spacing:1px;color:var(--cyan)}
.note-card p{font-size:14px;line-height:1.9;color:var(--text-light-mute)}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;position:relative}
.step{background:rgba(29,20,64,.68);border:1px solid var(--border-dark);border-radius:var(--r-card);padding:28px 24px;transition:border-color .26s,transform .26s}
.step:hover{border-color:rgba(53,224,200,.4);transform:translateY(-3px)}
.step-num{width:44px;height:44px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--font-num);font-size:18px;font-weight:700;margin-bottom:18px}
.step h3{font-size:18px;font-weight:600;color:var(--text-light);margin-bottom:10px}
.step p{font-size:14px;line-height:1.8;color:var(--text-light-mute)}

/* FAQ */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq-item{border:1px solid var(--border-dark);border-radius:16px;background:rgba(29,20,64,.6);overflow:hidden;transition:border-color .24s}
.faq-item.open{border-color:rgba(53,224,200,.42)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:64px;padding:14px 24px;background:none;border:0;color:var(--text-light);font-size:16px;line-height:1.6;text-align:left}
.faq-q:hover{color:var(--cyan)}
.faq-icon{position:relative;flex-shrink:0;width:18px;height:18px;transition:transform .24s}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--cyan);border-radius:2px}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;transition:transform .24s}
.faq-item.open .faq-icon{transform:rotate(90deg)}
.faq-item.open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-item.open .faq-a{max-height:320px}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:26px;color:var(--text-light-mute)}

/* CTA */
.cta-wrap{padding:0 0 96px}
.cta-strip{background:linear-gradient(135deg,#6C3BFF 0%,#C13BFF 52%,#35E0C8 100%);border-radius:var(--r-lg);padding:48px;display:flex;align-items:center;justify-content:space-between;gap:36px;box-shadow:0 18px 44px rgba(108,59,255,.28)}
.cta-strip h2{font-size:28px;line-height:1.35;font-weight:700;color:#fff}
.cta-strip p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.88);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* Fixed bar */
.fixed-bar{position:fixed;left:0;right:0;bottom:0;z-index:120;background:rgba(21,14,43,.96);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--border-dark)}
.fixed-bar.hidden{display:none}
.fixed-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.fixed-inner p{font-size:14px;color:var(--text-light-mute)}
.fixed-actions{display:flex;align-items:center;gap:12px}
.fixed-close{width:34px;height:34px;border-radius:50%;border:1px solid var(--border-dark);background:transparent;color:var(--text-light-mute);font-size:16px;line-height:1;display:flex;align-items:center;justify-content:center;transition:.22s}
.fixed-close:hover{color:var(--cyan);border-color:rgba(53,224,200,.45)}

/* Footer */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--border-dark);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{font-size:20px;margin-bottom:18px}
.footer-brand p{font-size:14px;line-height:1.9;color:var(--text-light-mute);max-width:360px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--gold);margin-bottom:18px;letter-spacing:.5px}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:var(--text-light-mute);transition:color .22s}
.footer-col a:hover{color:#fff}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid var(--border-dark);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-light-mute)}
.footer-bottom a{color:var(--cyan)}

/* Reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s ease,transform .32s ease}
.reveal.in{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn,.card,.step,.anchor-link{transition:none}
}
section[id]{scroll-margin-top:150px}

@media (max-width:1279px){
  .container{max-width:960px}
  .grid-cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .cat-hero-inner{flex-direction:column;align-items:flex-start;gap:28px}
  .cat-hero h1{font-size:32px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--head-h:60px}
  .section{padding:56px 0}
  .container{padding:0 16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .section-head h2{font-size:24px}
  .nav-menu,.header-actions .btn{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .cat-hero{min-height:32vh}
  .cat-hero-inner{padding:44px 0}
  .cat-hero h1{font-size:28px}
  .cat-hero-sub{font-size:15px}
  .badge-stat{min-width:0;padding:12px 20px}
  .badge-stat .num{font-size:32px}
  .grid-cards,.steps{grid-template-columns:1fr}
  .card-body{padding:20px}
  .cta-strip{flex-direction:column;align-items:flex-start;padding:28px}
  .cta-strip h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .cta-wrap{padding:0 0 56px}
  .fixed-inner{height:56px}
  .fixed-inner p{display:none}
  .fixed-actions{width:100%}
  .fixed-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1/-1}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  body.has-fixed-bar{padding-bottom:56px}
  .anchor-bar{top:60px}
  section[id]{scroll-margin-top:130px}
}
@media (max-width:520px){
  .cat-hero h1{font-size:24px}
  .section-head h2{font-size:22px}
  .card-body h3{font-size:19px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:480px){
  .hero-badges{width:100%;flex-direction:column}
  .badge-stat{width:100%}
  .fixed-actions{gap:8px}
}